Method for enabling a transaction

摘要

The method involves transmitting transaction details from a computer system (100) to a chip card (102), where the transaction details include specific information about a transaction. The transaction details are received by the chip card. The transaction details and a transaction number are displayed on a display (104) of the chip card, where the transaction number is unique to the transaction. The transaction number is received and validated by the computer system as a result of user input of the transaction number. The transaction is released if the received transaction number is valid. Independent claims are also included for the following: (1) a computer program product for releasing a transaction by a computer system (2) a signal sequence for releasing a transaction by a computer system (3) a chip card for providing a transaction number for a transaction to be released by a computer system.