The present invention describes a device and a procedure for the user-controlled release of chip-card functions in particular through the input of authentication data. The input of the authentication data takes place by way of an input device of a mobile chip-card reader, particularly one designed as...http://www.google.ca/patents/US6775398?utm_source=gb-gplus-sharePatent US6775398 - Method and device for the user-controlled authorisation of chip-card functions
