Pocket data carrier reading device e.g. for credit cards, includes device for reading data content filed on portable data carrier

摘要

A pocket card reader indicates the data content filed on a portable data carrier and has a central processor unit for controlling the operation of the device according to an application program. The device (10) contains a programming interface (20) for communicating with a terminal (40,44) of an application provider, and the application store (22) can be loaded via the provider interface (20) with further application programs (24,26,28).