Abstract: The invention relates to a method for authentication of a person previously known by a server to own a telephone having a unique identifier and to possess an access code, which method involves: the server sending (53) an identification code to a terminal on request by the latter via a first network; transferring (57) the identification code to the telephone; the server receiving (59), from the telephone via a second network, the identification code in association with the unique identifier; the server (61) generating a single-use authentication token and sending (63) the latter to the telephone; returning (64) the token to the server; and, in parallel: acquiring (67) via the terminal the access code input by the person; and sending (69) said access code to the server; authentication (71) of the person is obtained by the server if the identification code, the unique identifier, the authentication token and the access code correspond.

Abstract: A method of updating a cash register system (10) including a cash register program (1) configured to interact with at least one cash register peripheral (4) under the control of a control module (5). The method includes a step of inspection, at the control module (5), of the interactions between the cash register program (1) and the at least one cash register peripheral (4); a step of processing at least one inspected interaction, the processing step being selected from within the group including the reformulation of an interaction, the modification of an interaction, the copying of an interaction, the extraction of data from an interaction, the reorientation of an interaction.

Abstract: Authentication method by one-time password from a user (10) having a computer terminal (11) and a telephone terminal (12) who wishes to access an online resource from an information system (20), the method including a step of triggering a call to said telephone terminal with a caller identifier including the one-time password.