1000-2000 B.C. - Fingerprints were used on clay tablets for business transactions in ancient Babylon.

3rd Century B.C. - Thumbprints begin to be used on clay seals in China to “sign” documents.

610-907 A.D. - During the T’ang Dynasty, a time when Imperial China was one of the most powerful and wealthy regions of the world, fingerprints are reportedly used on official documents.

Some one would have to look at the fingerprint to verity that was the same person.

More Info: www.fingerprintamerica.com