| 摘要 |
An identity (or other security) card bears an optical image of a fingerprint of the authorised user, whereby the identity of a person presenting the card may be checked by comparison of said person's fingerprint against the image on the card at the point of use. As described, the comparison is performed by a machine which digitises both the image on a presented card and the print of a presented finger, and compares the digitised data. It is stated that this enables comparison at a higher resolution than would be possible if the fingerprint data on the card were to be stored as a digital code. The machine preferably includes a CCD(charge-coupled-device) camera to scan the presented prints. |
