Document validity checking device, e.g. for driving licenses, checks or credit cards, has at least two light sources, so that document being checked can be imaged when illuminated from several different angles

摘要

Document checking device, especially for driving licenses, has at least first and second illumination means (16, 18) for illuminating the document from different angles and at least a camera that records images of the document under different illumination. An image evaluation unit (22) that links the at least two images, to determine whether a particular security characteristic is present. An independent claim is included for a vending machine incorporating the above device.