PORTABLE CONSUMER TRANSACTION DEVICE WITH ON-BOARD POWERED ACCESS CONTROL

摘要

Implementations of a portable consumer transaction device include a portable consumer transaction payment card having a power supply, memory to store information and instructions, where the information includes an identifier for an account issued to a card holder for the use of the portable consumer transaction payment card to conduct a transaction on the account with a merchant, an active magnetic strip encoding the account, an input device to put the information in the memory, and a computing device to execute instructions to control access by the card holder to use the portable consumer transaction payment card to conduct the transaction on the account at a Point of Service terminal with the merchant. The card can display an associated current account balance which can be written to the memory after a transaction has occurred.