Undeniable signature systems
Unforgeable identification device, identification device reader
Unforgeable personal identification system
Universal broadcast code and multi-level encoded signal monitori
Universal broadcast code and multi-level encoded signal monitori
Untraceable electronic cash
Upstream signal control apparatus in bidirectional CATV system
Use of marker packets for synchronization of encryption/decrypti
User authenticating system and method in wide area distributed e
User authentication method and apparatus
User identification and authentication system using ultra long i
User presence verification with single password across applicati
User-addressing method and receiver in an authorized access tele
User-transparent security method and apparatus for authenticatin
Using trusted associations to establish trust in a computer netw