A POINT-OF-SALE TERMINAL TRANSACTIONS USING MUTATING IDENTIFIERS

摘要

A point-of-sale (POS) terminal for use in performing a transaction between a first entity and a second entity at a POS, the POS terminal associated with the second entity. The POS terminal stores a second mutating identified, receives encrypted transaction information from an account information carrier device over a communication link, sending the encrypted first and second transaction information to an authenticator, and receiving the second mutating identifier from the authepticator and a processor configured to encrypt transaction information with the second mutating identifier to create second encrypted transaction information.