Cards with integrated circuits, in particular cards with microprocessors (IC-cards) for communication with external data processing devices; data processing devices for communication with such IC-cards; recording carriers having programs stored thereon; operating system software and application software for such cards and data processing devices, in particular software for encrypting data

Developing operating system software and application software for IC-cards and data processing devices; management, maintenance and consultation in respect of the use and application of such operating system software and such application software