Data alteration checking apparatus and method and recording...
Data alteration checking apparatus and method and recording...
Data and access protection system for computers
Data and image capture, compression and verification system
Data application method
Data authentication system
Data authentication system
Data authentication system employing encrypted integrity blocks
Data card verification system
Data card verification system
Data card verification system
Data certification method and apparatus
Data communication method and system
Data communication network
Data comparison process
Data control system
Data copyright management system
Data copyright management system
Data copyright management system
Data copyright management system