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GreetingsHere is some information provided on PLAB.PLAB -1Taking PLAB / Examination requirementsILETS TestApplication FormDownload Application FormSample Extended Matching QuestionsSample Single Best Answer QuestionsWhat to study for PLAB?Taking the ExaminationFor the purposes of the PLAB test, one should use the same name, in the same order, as it appears on ones passport. It is important so that all correspondence can be intimated to the candidate promptly.ILETS TestThe exact date the IELTS test was taken and the scores obtained has to be mentioned . One should remember that the certificate is valid for a maximum of two years from the date the IELTS test was taken . If an individual passes in the IELTS test is more than two years old at the time of taking Part 1 of the PLAB test, he / she will need to provide proof that they have actively maintained or tried to improve their English language skills since the time they passed the IELTS tests.The ways in which the above can be done include:1) Proof of having undertaken a postgraduate course of study within the last two years since the IELTS test and original IELTS certificate showing that the required scores have been achieved .or2 ) A reference completed by a UK employer or your personal tutor or lecturer on a postgraduate course of study within the last two years since completion of the first IELTS test. The original IELTS certificate showing that the required scores were achieved also has to be enclosed.or3) Proof that the IELTS test was done again and the required scores were achieved.Application FormIf one does the booking was done online, he / she must pay by debit or credit card, otherwise the fee of £145 must be paid in advance in sterling. Else, fees paid in the United Kingdom must be in the form of a cheque, money order or postal order payable to ‘General Medical Council’. Fees sent from other countries, or paid in other countries, must be by sterling bank draft or money order. These must be made payable to ‘General Medical Council’. Please remember, where appropriate, to take bank charges into account when paying the fee.The form should be checked carefully to ensure that the information is correct, and that the form is signed and dated appropriately. Applications must be completed and signed only by the concerned individual. Any discrepancies may delay ones application.In case the candidate wishes to take the examination in the UK, he /she should submit their forms together with the appropriate enclosures by post to thePLAB Test Section (Candidate Services) GMC,178 Great Portland Street,London W1W 5JE.For those who have applied online, confirmation of one place will be given immediately ,otherwise once the form has been processed, a letter offering you a place in the Examination and a map showing you where the Examination centre is located will be sent to your registered address.In exceptional circumstances, leading to postponement or cancellation of the Examination, the candidates will be entitled to a full refund of the Examination entry fee. The General Medical Council will not be liable for any other costs.What is to be studied for PLAB?The main emphasis of the Examination is on clinical management and includes science as applied to clinical problems.The Examination is confined to core knowledge, skills and attitudes relating to conditions commonly seen by SHOs, to the generic management of life-threatening situations, and to rarer, but important, problems.The Examination assesses the ability to apply knowledge to the care of patients.Four groups of skills will be tested in approximately equal proportions:Diagnosis: Given the important facts about a patient (such as age, sex, nature of presenting symptoms, duration of symptoms) you are asked to select the most likely diagnosis from a range of possibilities.Investigations: This may refer to the selection or the interpretation of diagnostic tests. Given the important facts about a patient, you will be asked to select the investigation which is most likely to provide the key to the diagnosis. Alternatively, you may be given the findings of investigations and asked to relate these to a patient’s condition or to choose the most appropriate next course of action.Management/Treatment: Given the important facts about a patient’s condition, you will be asked to choose the most suitable treatment including therapeutics from a range of possibilities. In the case of medical treatments you will be asked to choose the correct drug therapy and will be expected to know about side effects.The context of clinical practice: This may include:i. Explanation of disease process: The natural history of the untreated disease.ii. Legal ethical: You are expected to know the major legal and ethical principles set out in the General Medical Council publication.iii. Practice of evidence-based medicine: Questions on diagnosis, investigations and management may draw upon recent evidence published in peer-reviewed journals. In addition, there may be questions on the principles and practice of evidence-based medicine.iv. Understanding of epidemiology: You may be tested on the principles of epidemiology, and on the prevalence of important diseases in the UK.v. Health promotion: The prevention of disease through health promotion and knowledge of risk factors.vi. Awareness of multicultural society: You may be tested on your appreciation of the impact on the practice of medicine of the health beliefs and cultural values of the major cultural groups represented in the UK population.vii. Application of scientific understanding to medicine: You may be tested on the scientific disciplines which underpin medicine. Examples include anatomy, genetics and pathology.The candidate will be expected to know about conditions that are common or important in the United Kingdom for all the systems outlined below.Accident and emergency medicine Examples:Abdominal, chest and head injuries (isolated or multiple injuries), bites and stings, bruising, burns, chest pain, collapse, cardiopulmonary resuscitation (CPR), eye problems, shock, trauma.Blood attributed diseases (Examples): Anaemias, coagulation defects, haemoglobinopathies, purpura.Cardiovascular system (Examples): Aortic aneurysm, arrhythmias, chest pain, deep vein thrombosis (DVT), heart failure, hypertension, ischaemic limb, myocardial infarction, myocardial ischaemia, stroke, varicose veins.Dermatology, allergy, immunology and infectious diseases (Examples): Allergy, fever and rashes, meningitis, serious infections including HIV, hepatitis B and tropical diseases, skin cancers.ENT and eyes (Examples): Dysphagia, earache, epistaxis, hearing problems, hoarseness, glaucoma, ‘red eye’, sudden visual loss.Gastrointestinal tract, liver and biliary system, and nutrition (Examples): Abdominal pain, constipation, diarrhoea, difficulty in swallowing, digestive disorders, gastrointestinal bleeding, jaundice, rectal bleeding/pain, vomiting, weight problems.Metabolism, endocrinology and diabetes( Examples): Diabetes mellitus, thyroid disorders, weight problems.Nervous system (Examples): Coma, convulsions, eye problems, headache, loss of consciousness, seizures, stroke, transient ischaemic attacks, vertigo.Orthopaedics and rheumatology( Examples): Arthritis, back pain, dislocations, fractures, joint pain/swelling, sprains and strains.Psychiatry (Examples): Alcohol abuse, anxiety, assessing suicidal risk, confusion and delirium, depression, drug abuse, overdoses and self harm, post-natal problems.Renal System (Examples): Haematuria, renal failure, sexual health, testicular pain, urinary calculi and infections.Respiratory system (Examples): Asthma, breathlessness/wheeze, cough, haemoptysis, pneumonia.Disorders of childhood (Examples): Abdominal pain, asthma, child development, childhood illnesses, earache, epilepsy, eye problems, fetal medicine, fever and rashes, joint pain/swelling, loss of consciousness, meningitis, non-accidental injury, sexual abuse, testicular pain, urinary disorders.Disorders of the elderly (Examples): Altered bowel habit, dementia, depression, digestive disorders, urinary disorders.Peri-operative management (Examples): Anti-emetics, pain relief, peri-operative monitoring, post-operative complications, pre-operative assessment.Palliative Care, Oncology( Examples): Blood dyscrasias, general malignancy, pain relief, terminal care.Taking the ExaminationTravel and accommodation arrangements have to be made by the candidate.Part 1 of the PLAB Test is a three-hour Extended Matching Question (EMQ) examination.The Invigilator’s instructions will take about 30 minutes. The Examination will last three hours and collecting the Examination materials will take a further 30 minutes. The candidate is required to be at the Examination centre for a minimum of four hours.The candidate is expected to carry proof of identity to the Examination centre together with the letter from the General Medical Council or British Council offering them a place in the Examination. These will be checked at the Examination.The Chief Invigilator will take a polaroid photograph of the candidate and will be asked to sign on the back of it to verify its authenticity. If for some reason the candidate fails to comply with this process, they will not be permitted to take the Examination.Every candidate will be provided with all the materials needed during the Examination. No other reference material will be allowed .After the ExaminationMarking of the Exams are computerized.For the first sitting of the Examination, the Professional and Linguistic Assessments Board determined the standard required to pass in accordance with a recognized method of standard setting. This standard is maintained by test equating. This means that the standard for each examination will be the same, but the pass mark may vary, reflecting the difficulty of the questions set in the Examination.Temporary personal circumstances which might affect the candidates performance such as illness, pregnancy or bereavement will not be taken into account.At the end of the Examination, the candidate will be informed the date on which their results will be available. This will be about four weeks after the examination. Results will be published on the website and a letter containing the results will be posted about two weeks later to the candidates address.On passing part –1 of the PLAB examination the candidate can apply online immediately to take Part 2 of the test .If the candidate fails in the first attempt he /she may re-apply. However one cannot apply for PLAB Part 2 or re-apply for Part 1 before any previous PLAB examination results have been issued.The results will include information about your position in relation to the pass mark and the performance of the other candidates.Candidates wishing to verify any mark or marks, by means of a clerical check, should submit a request in writing to the PLAB Test Section no later than three weeks after the results have been issued. A fee of £40 must accompany the request.The check will be done at the earliest and a response will be issued within 10 working days.A candidate who wishes to make a complaint about the examination should submit a detailed written report to the Head of the PLAB Test Section no later than three weeks after the results have been issued.The individual should provide their name, address, telephone number and GMC reference number.The complaint will be acknowledge and investigated and a response will be sent within 10 working days.However the candidate cannot make an appeal against the mark they receive for the Examination. The examiners’ decision is final.

Here is some information provided on PLAB.PLAB -1Taking PLAB Examination requirements :ILETS TestApplication FormWhat is to be studied for PLAB?Taking the ExaminationAfter the ExaminationFor the purposes of the PLAB test, one should use the same name, in the same order, as it appears on ones passport. It is important so that all correspondence can be intimated to the candidate promptly.★ IELTS TestThe International English Language Testing System,or IELTS is an international standardized test of English language proficiency for non-native English language speakers. It is jointly managed by the British Council, IDP: IELTS Australia and Cambridge Assessment English. IELTS is one of the major English-language tests in the world. IELTS is the only Secure English Language Test approved by UK Visas and Immigration (UKVI) for visa customers applying both outside and inside the UK.No minimum score is required to pass the test. An IELTS result or Test Report Form is issued to all test takers with a score from "band 1" ("non-user") to "band 9" ("expert user") and each institution sets a different threshold. There is also a "band 0" score for those who did not attempt the test.The exact date the IELTS test was taken and the scores obtained has to be mentioned . One should remember that the certificate is valid for a maximum of two years from the date the IELTS test was taken . If an individual passes in the IELTS test is more than two years old at the time of taking Part 1 of the PLAB test, he / she will need to provide proof that they have actively maintained or tried to improve their English language skills since the time they passed the IELTS tests.The ways in which the above can be done include:1) Proof of having undertaken a postgraduate course of study within the last two years since the IELTS test and original IELTS certificate showing that the required scores have been achieved . OR2 ) A reference completed by a UK employer or your personal tutor or lecturer on a postgraduate course of study within the last two years since completion of the first IELTS test. The original IELTS certificate showing that the required scores were achieved also has to be enclosed. OR3) Proof that the IELTS test was done again and the required scores were achieved.★ Application FormIf one does the booking online, he / she must pay by debit or credit card, otherwise the fee of £145 must be paid in advance in sterling. Else, fees paid in the United Kingdom must be in the form of a cheque, money order or postal order payable to ‘General Medical Council’. Fees sent from other countries, or paid in other countries, must be by sterling bank draft or money order. These must be made payable to ‘General Medical Council’.Please remember, where appropriate, to take bank charges into account when paying the fee.The form should be checked carefully to ensure that the information is correct, and that the form is signed and dated appropriately. Applications must be completed and signed only by the concerned individual. Any discrepancies may delay ones application.In case the candidate wishes to take the examination in the UK, he /she should submit their forms together with the appropriate enclosures by post to the :PLAB Test Section (Candidate Services) GMC,178 Great Portland Street,London W1W 5JE.For those who have applied online, confirmation of one place will be given immediately ,otherwise once the form has been processed, a letter offering you a place in the Examination and a map showing you where the Examination centre is located will be sent to your registered address.In exceptional circumstances, leading to postponement or cancellation of the Examination, the candidates will be entitled to a full refund of the Examination entry fee. The General Medical Council will not be liable for any other costs.★ What is to be studied for PLAB?The main emphasis of the Examination is on clinical management and includes science as applied to clinical problems.The Examination is confined to core knowledge, skills and attitudes relating to conditions commonly seen by SHOs, to the generic management of life-threatening situations, and to rarer, but important, problems.The Examination assesses the ability to apply knowledge to the care of patients.♦ Four groups of skills will be tested in approximately equal proportions :Diagnosis - Given the important facts about a patient (such as age, sex, nature of presenting symptoms, duration of symptoms) you are asked to select the most likely diagnosis from a range of possibilities.Investigations - This may refer to the selection or the interpretation of diagnostic tests. Given the important facts about a patient, you will be asked to select the investigation which is most likely to provide the key to the diagnosis. Alternatively, you may be given the findings of investigations and asked to relate these to a patient’s condition or to choose the most appropriate next course of action.Management/Treatment - Given the important facts about a patient’s condition, you will be asked to choose the most suitable treatment including therapeutics from a range of possibilities. In the case of medical treatments you will be asked to choose the correct drug therapy and will be expected to know about side effects.Context of Clinical Practice - This may include :i. Explanation of disease process: The natural history of the untreated disease.ii. Legal ethical: You are expected to know the major legal and ethical principles set out in the General Medical Council publication.iii. Practice of evidence-based medicine: Questions on diagnosis, investigations and management may draw upon recent evidence published in peer-reviewed journals. In addition, there may be questions on the principles and practice of evidence-based medicine.iv. Understanding of epidemiology: You may be tested on the principles of epidemiology, and on the prevalence of important diseases in the UK.v. Health promotion: The prevention of disease through health promotion and knowledge of risk factors.vi. Awareness of multicultural society: You may be tested on your appreciation of the impact on the practice of medicine of the health beliefs and cultural values of the major cultural groups represented in the UK population.vii. Application of scientific understanding to medicine: You may be tested on the scientific disciplines which underpin medicine. Examples include anatomy, genetics and pathology.The candidate will be expected to know about conditions that are common or important in the United Kingdom for all the systems.★ Taking the ExaminationTravel and accommodation arrangements have to be made by the candidate.Part 1 of the PLAB Test is a three-hour Extended Matching Question (EMQ) examination.The Invigilator’s instructions take about 30 minutes. The Examination will last three hours and collecting the Examination materials will take a further 30 minutes. The candidate is required to be at the Examination centre for a minimum of four hours.The candidate is expected to carry proof of identity to the Examination centre together with the letter from the General Medical Council or British Council offering them a place in the Examination. These will be checked at the Examination.The Chief Invigilator will take a polaroid photograph of the candidate and will be asked to sign on the back of it to verify its authenticity. If for some reason the candidate fails to comply with this process, they will not be permitted to take the Examination.Every candidate will be provided with all the materials needed during the Examination. No other reference material will be allowed .★ After the ExaminationMarking of the Exams are computerized.For the first sitting of the Examination, the Professional and Linguistic Assessments Board determined the standard required to pass in accordance with a recognized method of standard setting. This standard is maintained by test equating. This means that the standard for each examination will be the same, but the pass mark may vary, reflecting the difficulty of the questions set in the Examination.Temporary personal circumstances which might affect the candidates performance such as illness, pregnancy or bereavement will not be taken into account.At the end of the Examination, the candidate will be informed the date on which their results will be available. This will be about four weeks after the examination. Results will be published on the website and a letter containing the results will be posted about two weeks later to the candidates address.________________________________________________PLAB - 2On passing Part 1 of the PLAB examination the candidate can apply online immediately to take Part 2 of the test .If the candidate fails in the first attempt he /she may re-apply. However one cannot apply for PLAB Part 2 or re-apply for Part 1 before any previous PLAB examination results have been issued.The results will include information about your position in relation to the pass mark and the performance of the other candidates.Candidates wishing to verify any mark or marks, by means of a clerical check, should submit a request in writing to the PLAB Test Section no later than three weeks after the results have been issued. A fee of £40 must accompany the request.The check will be done at the earliest and a response will be issued within 10 working days.A candidate who wishes to make a complaint about the examination should submit a detailed written report to the Head of the PLAB Test Section no later than three weeks after the results have been issued.The individual should provide their name, address, telephone number and GMC reference number. The complaint will be acknowledge and investigated and a response will be sent within 10 working days.However the candidate cannot make an appeal against the mark they receive for the Examination. The examiners’ decision is final.Hope it might help your query✌Upvote if you feel it useful ✍

The New SquareI was asked to answer this question and can only address information that is not confidential and is generally available. From a technical perspective there are two active parts to the process: the consumer facing side and the backend processes. I will break this down into two sections.The Consumer Facing SideSquare operates RFC 5321 compliant SMTP mail server(s) [1] that translates and acts upon a transactional email between two parties, the sender and the recipient. Square currently achieves this through the Square Cash iOS and Android app and works in conjunction with the resident email app on the device to send the precomposed email message. The transaction is limited to 48 states in the US (TN and HI are excluded) [2] and requires a US issued debit card with a Visa Or MasterCard logo. A successful first time transaction involves four steps:The sender completes a form to a recipients email address for a stated amount. Square then composes an email message that presents the amount to be sent in the subject line of the email with the recipient address in the “to:” field and [email protected] in the “cc:” field. The sender can send a message in the body of the email.The sender, recipient and Square receives a copy of the original email. Square in turn creates two new email message: one for the sender and one for the recipient.The sender must respond to the email by clicking on a link and completing a form that requests a US Bank issued debit card for instant withdrawal of funds.The recipient must respond to the email by clicking on a link and completing a form that requests a US Bank issued debit card for up to two day deposit of funds.If all goes well, the funds will transfer within a window of time that can span up to two days [3]:As a Recipient, you will need to create an account with Square, and link your Eligible Transaction Account. Once you link your Eligible Transaction Account you will generally receive the funds that are sent to you within 2 business days. You will also e enabled to send funds to other Recipients after you receive funds using the Service. You agree that we will not be liable in any way for any Payments that you may receive, regardless of whether you authorized the Sender to send them to you.Funds that are not claimed have an interesting fate [3]:You understand and agree that when you initiate a Payment Instruction from an Eligible Transaction Account using the Service, the processing of the Payment Instruction will begin and the debiting of your Eligible Transaction Account will occur as early as the day of such initiation. However, we will only begin to process the requested transfer of funds once the Recipient has provided all required information, and you hereby authorize and direct us to retain such funds until the earlier of such time as the Recipient has provided all required information or fifteen (15) days.…Payments not claimed by a Recipient will be cancelled automatically fifteen (15) days after the processing of the Payment begins, and we will attempt to return any unclaimed, refused, refunded, prohibited, or denied Payment along with the Service fee to your Eligible Transaction Account. If we are not able to return the amounts to your Eligible Transaction Account we may use other reasonable efforts to return such Payment to you as permitted by law.Square states that only US issued debit cards with Visa and MasterCard logos can be used for this system [3]. They explicitly state that no other payment card can be used. However in my tests I was very surprised by a glaring oversight in this limitation.After the sender and recipient link their respective debit cards to the associated email address, this link is stored in Square’s computers and at this point there is no way for either party to unlink the association between the email address and the debit card. This means that if you have many debit cards you need new correlated email account to accommodate these Square Cash transactions. Square does not restrict the number of debit cards and email addresses you use.The Backend SideTo perform this type of money transfer function in the US a bank is required. In my early tests of Square Cash in June, 2013 I determined that my test transactions were processed by Chase Bank. This was not a surprise as Chase is also the Visa and MasterCard Acquiring bank for Square. Chase is also a Square early stage investor.Square built a number of processes on top of the STMP mail servers that connect to internal systems that run a number of services from PostgreSQL, Ruby, Java, WebSocket Protocol and other systems. These systems prepackage information that is sent to the Visa Personal Payments API [4]. MasterCard has an equivalent service however I will focus on the Visa API. Square is also using a third method I will call this the Purchase Refund method."Purchase refund? I did not buy anything." A Taxing ProblemIn my tests I have also detected that Square is using a method that can best be discribed as kludged together and not the API method. They issue a "purchase refund" as a method to pay the recipient's debit card. This method is quite trival to implement and uses the standard payment card network but send a "purchase refund" for a transaction that had no purchase. The problem is this creates mountains of confusion as the recipient tries to reconcile the checking account statement. It also has a rather large tax impact to the recipient. In an audit the IRS will question were the funds originated from that created this "purchase refund". The sender is also confused as they are charged for a "purchase". It all sounds like a witty solution but it will turn bad very fast. I am rather certain Square has not thought of the tax issues this will cause, or the legal problems that can result.The other issue is that not all banks will allow an "unbalanced trasaction", knowingly. I spoke to a risk executive at one of the top largest US banks and they said they would have a dim view of this system and may challenge it. All refund transactions should be balanced with purchase trasaction. If you operate a merchant account please do not try to experiment with this method, you will lose your account. This method is also limited to only US accounts. Finally this is really not a sustainable method for quite a number of other reasons and therefore Square would ultimatly have to use an API that was designed for this purpose.Visa has several mandates about unbalanced and unmatched refunds and recommends both card issuers and merchant acquirers to monitor them:Credit and Refund Restrictions (ID#: 010410-010410-0001710)A U.S. Merchant must not:Process a Credit Transaction Receipt without having completed a previous retail Transaction with the same Cardholder, except as specified in "Credit Transaction Receipt Delivery – U.S. Region."Original Adjustment through VisaNet (ID#: 010410-010410-0008880)An Acquirer may initiate a credit Reversal only to correct inadvertent processing errors.The Acquirer must process a credit Reversal or a debit Adjustment within thirty (30) calendar days of the Processing Date of the initial credit Transaction.Credit Transaction Receipt (ID#: 010410-010410-0008605)A Merchant may, at its discretion, prepare a Credit Transaction Receipt when a valid Transaction Receiptwas previously processed and the Cardholder either canceled the Transaction later or returned the goods.At the time of the Credit Transaction, the Merchant must:1) Prepare a credit that includes the Credit Transaction Receipt date and identifies the original Transaction.2) Deliver a completed Credit Transaction Receipt to the Cardholder.3) Deposit the Credit Transaction Receipt within five (5) calendar days from the date that the creditwas issued.4) In the U.S. region, the Credit Transaction Receipt must describe the merchandise returned, servicescanceled or adjustment made.ID:# 151012-010410-0003076A Merchant must not:1) Accept payment from a Cardholder for the purpose of depositing funds to the Cardholder's account2) Process a Credit Transaction Receipt without having completed a previous retail Transaction with the same CardholderThe loading of value to a Visa Prepaid Card that has been designated for participation in the Visa Prepaid Load Service by the Issuer is excluded from these restrictions.Effective 27 January 2013, in the U.S. Region, or in a U.S. Territory, the Merchant must refund any U.S. Credit Card Surcharge assessed on the Credit Transaction amount. For partial refunds, the U.S. Credit Card Surcharge amount must be pro-rated.It will be interesting to see if this method is well received by the recipient banks if the service becomes very popular. However something tells me they will continue to use this "purchase refund" method for a while.The Visa API MethodVisa Personal Payments (VPP) [5] is a payment service that lets people send money to millions of eligible Visa accounts around the world through the Original Credit Transaction. Visa created this API a number of years ago and forms the basis of quite a number of programs that member banks have created. The API system is not perfect and is still working out issues with some member banks. This API is really quite powerful and has features that are far more simplex then what Square is currently using. Some functions of this API is:VPP Money Transfer: Consumers can send funds to their Visa account or to another person’s Visa account.VPP Prepaid Load: Consumers can load/reload funds to a Visa reloadable prepaid card in participating countries.VPP Credit Card Bill Pay: Consumers can pay a Visa credit card bill.Example of a program flow chart using the VPP API.There are a number of steps that each transaction takes on the way to the recipient’s debit card. The VPP program uses the same systems as a standard payment card transaction. However there are a number of codes set to inform the network that this is not a merchant credit but an OCT transaction. The minimum API calls to the VPP would be Account Verification (ACNV) and/or Account Lookup (ACNL).Example of the transaction flow of a VPP API process.In the example above, Square is inserted on the front and back of the VPP process. Square facilitates the transaction on both sides but uses the Visa API to make it all operate.Square Paying 10¢ Or More For People To Send Money For FreeSquare would be paying 10¢ to Visa under the current Interchange Reimbursement Charts for a US based Original Credit Transaction. There would also likely be a cost charged by Chase bank on top of this fee. Thus it is safe to conclude at minimum Square is paying about 10¢ to perform a Square Cash transaction using the VPP API method or about 25¢ or more using the "purchase refund" method. Keeping score, it means they are subsidizing each and every Square Cash transaction as Square is not charging for the service at this point. Clearly this is not a sustainable business model. If Square were to charge a fee, they would lose a majority of their business to other systems.Building Payment Cards On FileThe logic here is to grow the number of users they have on file and to build a large database of payment cards held on Square servers. This can be the only reason Square would logically pay people to send money through their system. The process to grow cards on file was started with what is now known as Square Wallet and continues on with the premise of the Square Market. The Square Wallet has not performed very well and his since had the icon for the product removed from the front page of the Square website, now hidden as a gray text link at the bottom of the front page. The Square Market faces a huge and well developed sector that has thousands of competitors many that can send millions of people per hour to the commerce sites they have built. If you have a store online the one thing you seek is traffic and this translates directly to sales.Square is hoping that the very over crowded person to person payment sector can tolerate yet another system. They face a tremendous number of direct competitors: the semi-stealth Clinkle, Google’s Gmail based person to person payment system, over 200 US banks, dozens of other companies and of course PayPal.Square hopes that as more people register cards that in some way they can leverage this into a more appealing wallet system. However in this process they will also face Apple and the iWallet based around the spectacular success of Touch ID. As the iWallet becomes more clear person to person payments may become as simple as dropping an icon in Air Drop.Email As A Person To Person Payment System Is From 1994On October 20, 1998 a payment company that predated PayPal and x.com was issued a patent for a remarkable new way to pay, via email called “Computerized system for facilitating transactions between parties on the internet using e-mail” [6]. This may sound very familiar as this company not only invented the very first viable internet payment system, they built it around STMP mail servers:Abstract:A payment system and method are disclosed for processing financial exchanges over a network between a merchant and a buyer. For example, receiving from a merchant, over the network, information associated with a financial transaction and non-financial data relating to a buyer involved in the financial transaction. Authorizing payment, associated with the financial transaction, to the merchant on behalf of the buyer using the non-financial data related to the buyer. A notification of the authorized payment on behalf of the buyer is sent to the merchant over the network. Upon notification from the merchant that the buyer has committed to completing the financial transaction, processing payment to the merchant on behalf of the buyer.…Security is maintained by isolating financial and credit information of users' cardholder accounts from the front end portion of the payment system and by isolating the account identifying information from the associated e-mail address.I became great friends with the primary author of this patent in late 1994 and continue to be in regular contact with him. His name is Nathaniel S. Borenstein [7] and is by every definition a polymath and true scientist. Nathaniel and I spent hours speaking about the future of payments and his company First Virtual [8] was the Square of 1996. CEO, Lee Stein appeared on the front cover of Fortune and Business week at the same time. There was high hopes for First Virtual just like there is for Square today.First Virtual’s Simple MIME Exchange Protocol was built to scale and allowed sellers to verify accounts and buyers to initiate payment transactions. The system was linked to a payment card on the buyer’s side and a checking account on the seller’s side. However there was a movement to link buyer’s and seller’s payment cards to gather through First Virtual’s payment system. This was a decade before the Visa VPP was thought of.This patent from First Virtual and about a dozen other patents may present Square with some rather large challenges. There is clear prior art and if the patent holders express control of this method, it may have an impact on how Square’s current system may need to change.Guess Who Owns The First Virtual Email Based Payment Patents?There is a rather deep irony to the ending of First Virtual and how it relates to Square today. First Virtual was too far ahead of its time. And just as they began to gain traction the start of the Internet bust was taking hold (a Series A crunch). The company was sold a number of times and wound up with Double Click in 2001. Double Click went on to sell the First Virtual patents to, drum roll, PayPal. So as it stands today, PayPal not only owns the 1998 patent “Computerized system for facilitating transactions between parties on the internet using e-mail” but also a number of other foundational patents that cover email based person to person payments.If anyone contacted me and asked about the challenges they would face with the intellectual property surrounding this method I would have advised a far different path that would not only be more efficient, but would not encroach upon prior art, while still using an email based system. I am in no way double guessing the fine talent at Square and the wonderful lawyers they no doubt used to vet this system. I do know however that three of the best patent attorneys in late 2007 advised a startup not to use an email based method as there were too many encroachments on prior art. That company had over 10 million in funding and wound up pivoting to other things.The New SquareSquare has drifted very far from the business premise that made the company famous. The primary premise was to help micro-merchants accept payment cards. Square simple but powerful premise was a spectacular success. By constraining and editing, Square moved fast from the first transaction on a cold winter day in 2010, at Sightglass Coffee in San Francisco. At the time there were few direct competitors focused on the micro-merchant using a smartphone and a card reader,As we approach 2014 Square has hundreds of competitors with card readers on smart phones including Square’s own bank, Chase [8] and of course PayPal who is offering zero cost to merchants currently compared to 2.75% at Square. These competitors have slowed the number of new merchants boarding the Square payment system and has contributed to the attrition they are experiencing. Transaction volume will grow at Sqaure, because this is how payment card companies work, but as time moves on this too will flatten if new markets are not discovered. Square is very late to expend into Europe, South America and Asia and lost first mover status to very well entrenched local and regional payment companies with very similar systems and price points.Square has also entered into a market that is very robust and full of agile competitors by creating the Square Market. Competing with Amazon and Etsy and 1000s of other marketplaces is an interesting shift from Square’s roots.With Square Cash, the company faces PayPal on their own turf. And PayPal has a lower cost of funds when one aggregates the money on deposit the over 150 million PayPal users accumulated. This means from a long term price point, PayPal would benefit. We are also talking about the new PayPal that will no doubt match Square point to point to such a level that from a user’s perspective they would not see a difference.Square also faces Google and the person to person system they have created. Early and limited results show that the platform is already a mild hit with consumers. Google will methodically expand this service and it will become as common as attaching an image to your email. It just works.Would you want to compete with Google, Apple, PayPal, Amazon and so many others even if you were the best startup the world has ever seen? These company already solved the problems that Square is trying to address.Square Is Packed Full Of Astounding TalentI fear that the company is now battling a multiple front war. A study of history will inform how this always turns out. Square’s ethos used to be about constraining and editing to an essence. It was also about limiting the products so that the company can focus on the really big problems that need to be solved in payments. I think Square has some of the most talented people working on these projects. I just think there are no new problems to solve in person to person payments and internet marketplaces especially when the company is facing the largest companies in the world in the process.I have many friends at Square. Some have got to know me here on Quora. All of them know how much love I have for what they do and the company they work for.That simple idea that started Square at Sightglass Coffee can still be kindled again. I see so many unsolved problems for this amazing talent to solve. Real problems that real merchants face every day, yet no one notices. There just needs to be the leadership and the willingness to embrace the ethos that got Square so very far. Solving the unsolved problems is how you change the world.________[1] Simple Mail Transfer Protocol[2] Troubleshoot Square Cash[3] Square Cash Agreement[4] Visa Developer Program[5] Visa Personal Payments[6] Computerized System For Facilitating Transactions Between Parties On The Internet Using E-mail[7] Nathaniel Borenstein[8] First Virtual[9] Square Banking Partner, Chase Releases Competing Product.