Abstract: A method is provided which allows a service to be enjoyed through a mobile telephone terminal without the need of paying for this service. This can be achieved by allowing a first subscriber to use the credit or subscription of a second subscriber. The subscriber identification cards at least of the two subscribers involved are provided with short range radio communication transceivers and establish a short range communication channel between them so that one card may request the other card to pay for this service and the other card may grant this request through this channel. Then the mobile telephone networks of the cards are informed of the granted request. Before, during and after the grant of the request, the subscriber identification cards remain active and operative in communicating together and with the associated terminals.

Abstract: A method is provided which allows a service to be enjoyed through a mobile telephone terminal without the need of paying for this service. The can be achieved by allowing a first subscriber to use the credit or subscription of a second subscriber. The subscriber identification cards at least of the two subscribers involved are provided with short range radio communication transceivers and establish a short range communication channel between them so that one card may request the other card to pay for this service and the other card may grant this request through this channel. Then the mobile telephone networks of the cards are informed of the granted request. Before, during and after the grant of the request, the subscriber identification cards remain active and operative in communicating together and with the associated terminals.

Abstract: A method of protecting sensitive information in an information exchange between a first data processing system suitable to supply sensitive information and a second data processing system suitable to use sensitive information includes: selecting in the first data processing system a sub-set of sensitive information elements from a collection of digital sensitive information elements; storing the selected sub-set of sensitive information elements in a responsive software agent suitable to automatically react to information queries; submitting the responsive software agent to an information query generated by the second data processing system; and reacting or responding to the information query by the software agent based on the sub-set of sensitive information. The responsive software agent is advantageously generated in the first data processing system and transferred to the second data processing system to locally respond to the queries.