The present disclosure relates to a method of authenticating an access from a mobile terminal to an available service on a bidirectional communication network. According to at least one embodiment, said method comprises:an acquisition of at least one information relating to said service contained in a radio tag and comprising at least:€ ¢ an address of said service;An access identifier for said service, comprising at least one identifier relating to a product to which said radio tag belongs;a request for access to said service taking account of said address and including a supply of said access identifier.
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