Patent ID: 7719566

Claim:
An optical identification device comprising: a digital camera having a focal length changing member for changing between at least one visual-observation focal length and one print-recognition focal length; a system for automatic print recognition which is connected to the camera so as to be activated when the camera has adopted the print-recognition focal length; and a system for automatic face recognition connected to the camera to be activatable when the camera has adopted its visual-observation focal length; wherein the device is further constructed so that if the system for automatic face recognition is activated and successfully recognizes a user's face, the user is authorized and the camera remains at the visual-observation focal length, but if the system for automatic face recognition is activated and fails to recognize the user's face, the device causes the focal length changing member to change the camera to the print-recognition focal length and the system for automatic print recognition is activated, and if the system for automatic print recognition fails to recognize the user's print, the device causes the focal length changing member to change the camera from the print-recognition focal length to the visual-observation focal length.