Acquirer Personal Verification in a Point-Of-Sale System
Original Publication Date: 1985-Aug-01
Included in the Prior Art Database: 2005-Feb-19
This article discloses a method of personal identification number (PIN) verification at a point-of-sale (POS) terminal, wherein the POS terminal is in communication with an acquiring bank instead of the card- issuing bank of the cardholder. A method of PIN verification wherein the POS terminal is in communication with the card issuing bank is briefly described in another article on pages 1109-1122. The diagram shows the customer-retailer-acquiring bank relationship in which the method of PIN verification could be useful. The detailed steps of PIN verification are as follows: 1. The cardholder's identifier IDi is read from the card. (A smart card is assumed, i.e., a card having a crypto capability and typically implemented by incorporating a micro- circuit on the card.) 2.