Method and system for validating a transaction, corresponding transactional terminal and program

摘要

A method and apparatus are provided for validating a transaction on a transactional terminal, the transaction being associated with a user. The method includes a step of decoding a validation code preliminarily generated and displayed by the transactional terminal, entered by the user in a validation message, and transmitted by a mobile device of the user to an entity of a telecommunications network to which the mobile device and said transactional terminal are connected.