PROCEDE DE SECURISATION D'UN PAIEMENT D'UN CLIENT A UN COMMERCANT, CENTRE DE LOCALISATION ET SYSTEME CORRESPONDANT

The invention concerns a security method for a payment from a client to a supplier, including a transmission step to a management center of a payment request including at least one identifier of said client, according to a predefined protocol. Set forth in the invention, such a process includes a validation step wherein: said management center generates a validation request, to the attention of said client, according to a second protocol independent from said first protocol, to an address indicated by said client; a transmission is made in the name of said client of a payment validation or refusal message, according to said second protocol.