Abstract: A method for authorizing return of a purchase by a customer to a merchant by an interaction of a customer chip card upon which a customer transaction history is stored and a merchant POS terminal upon which predetermined data is stored, the method comprising the steps of, (a) reading at least part of the customer transaction history from the customer chip card, (b) comparing the part of the customer transaction history read from the customer chip card with the predetermined data, and (c) issuing to the merchant a message from the POS terminal based upon the outcome of the comparison.

Abstract: The invention relates to a benefit management method for a user when he pays for a transaction carried out with at least one affiliated merchant by means of a bank chip and/or magnetic card. The users application data items are stored in a chip and/or in a remote external server and a determined promotional program is stored and/or available at the merchant. The inventive method consists in questioning the chip and/or the server on the application data assigned to said card, in using eventual already obtained benefits and/or in generating new benefits according to the application data and the determined promotional program of the merchant prior to updating said application data of the user.

Abstract: A method for authorising return of a purchase by a customer to a merchant by an interaction of a customer chip card upon which a customer transaction history is stored and a merchant POS terminal upon which predetermined data is stored, the method comprising the steps of, (a) reading at least part of the customer transaction history from the customer chip card, (b) comparing the part of the customer transaction history read from the customer chip card with the predetermined data, and (c) issuing to the merchant a message from the POS terminal based upon the outcome of the comparison.

Abstract: The electronic chip (10) comprises an interface (11) enabling it to communicate with a terminal and a processing circuit (13) capable of performing processing when the chip communicates with the terminal. A time base circuit (18) is connected to the processing circuit (13) for generating a first signal (SI) during at least one given moment if processing has not yet been completed at said moment. A restart signal (SR) is transmitted to the interface in response to the first signal with the purpose of indicating to the terminal that the chip is still operating.

Abstract: The electronic chip (10) comprises an interface (11) enabling it to communicate with a terminal and a processing circuit (13) capable of performing processing when the chip communicates with the terminal. A time base circuit (18) is connected to the processing circuit (13) for generating a first signal (SI) during at least one given moment if processing has not yet been completed at said moment. A restart signal (SR) is transmitted to the interface in response to the first signal with the purpose of indicating to the terminal that the chip is still operating.