BIOMETRIC-BASED TRIGGERING OF A USEFUL ACTION BY MEANS OF AN ID TOKEN

The invention relates to a method for biometric-based triggering of a useful action by means of an ID token associated with a user, which ID token was personalized by the sensing and storing of a biometric characteristic in relation to personalization and was activated by the sensing of the corresponding characteristic in relation to activation, comprising: a) presenting the activated ID token to a device for triggering a useful action; b) sensing the corresponding biometric characteristic of the user in relation to the useful action; c) comparing the corresponding biometric characteristic sensed in relation to the useful action with the corresponding biometric characteristic of the user stored in relation to personalization; and d) if the comparison indicates that the corresponding biometric characteristic sensed in relation to the useful action adequately matches the corresponding biometric characteristic of the user stored in relation to personalization: triggering the useful action.