When a request to access a file or the like is made, a characteristic measuring unit measures the physical characteristic of a user of a computer system. A data degenerating unit processes the measured physical characteristic as degenerated characteristic data like a one-dimensional projection and outputs...http://www.google.es/patents/US5887140?utm_source=gb-gplus-sharePatente US5887140 - Computer network system and personal identification system adapted for use in the same
Computer network system and personal identification system adapted for use ...
