COMMUNICATION BETWEEN AN OPERATOR DEVICE, A SELLER MODULE AND A CUSTOMER MODULE

摘要

The method involves sending a request from the operating device (10) to the provider module (12), authenticating the provider module against the customer module (14), forwarding the request from the provider module to the customer module, sending a response to the request from the customer module to the provider module and forwarding the response from the provider module to the operating device. Independent claims are also included for the following: (a) a provider module (b) a customer module (c) and a computer program product for configuring a portable data medium as a provider or customer module.