A server device (31, 41, 51, 300) comprising a programmable controller (310), a memory (320, 330) coupled to the controller, and a server program (340) stored in the memory and executable by the controller, characterized by
- at least a first interface (360-364) adapted to establish a first communication link (32, 42, 52) to a portable telecommunication apparatus (1, 200),
- at least a second interface (350) for connecting the server device to an electronic utility device (30, 40, 50, 400),
- wherein the server program (340) is adapted to communicate with a client program (240) in the portable telecommunication apparatus through the first interface, and is adapted to communicate with the electronic utility device through the second interface, so that digital information may be transferred between the portable telecommunication apparatus and the electronic utility device: