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A personal identification number (PIN, pronounced "pin"; often redundantly PIN number) is a numeric password shared between a user and a system, that can be used to authenticate the user to the system. Typically, the user is required to provide a non-confidential user identifier or token (the ''user ID'') and a confidential PIN to gain access to the system. Upon receiving the user ID and PIN, the system looks up the PIN based upon the user ID and compares the looked-up PIN with the received PIN. The user is granted access only when the number entered matches with the number stored in the system. Hence, despite the name, a PIN does not ''personally'' identify the user.〔(Your ID number is not a password ), Webb-site.com, 8 November 2010〕 PINs are used with banking systems (where the identifying token is a card), but are also used in other, non-financial systems. The PIN is not printed or embedded on the card but is manually entered by the cardholder during automated teller machine (ATM) and point of sale (POS) transactions (such as those that comply with EMV), and in card not present transactions, such as over the Internet or for phone banking. PINs may also be used in contexts other than ATM or POS transactions, such as door access, Internet transactions, or to log in to a restricted website. In such cases, the PIN may simply be a password, and not necessarily associated with a specific card. In banking systems, PIN management and security are governed by international standard ISO 9564. ==History== The PIN originated with the introduction of the ATM in 1967, as an efficient way for banks to dispense cash to their customers. The first ATM system was that of Barclays in London, in 1967; it accepted cheques with machine-readable encoding, rather than cards, and matched the PIN to the cheque.〔Jarunee Wonglimpiyara, ''Strategies of Competition in the Bank Card Business'' (2005), p. 1-3.〕〔 In 1972, Lloyds Bank issued the first bank card to feature an information-encoding magnetic strip, using a PIN for security.〔Jarunee Wonglimpiyara, ''Strategies of Competition in the Bank Card Business'' (2005), p. 5.〕 In 2006, James Goodfellow, the inventor who patented the first personal identification number, was awarded an OBE in the Queen's Birthday Honours.〔 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Personal identification number」の詳細全文を読む スポンサード リンク
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