Data entry recorder for computer cards

Data transformation device and recording medium having...

Device for automatic reading of a plurality of codes by...

Device for secretly observing visual intelligence

Digital signature generating server and digital signature...

Electronic information inquiring method

Enciphering-and deciphering apparatus in the form of a...

Encoder/decoder

Encryption template

Encryption template

Graphic matter and process and apparatus for producing,...

Graphics terminals

Hardware arrangement for enciphering bit blocks while...

Method and apparatus for arithmetic operation and recording...

Method and apparatus for conversion of graphical clear...

Method and apparatus for protecting computer software...

Method for data preparation and watermark insertion

Method for inputting confidential information, and...

Method for inserting a watermark signal into data

Methods and apparatus for encrypting, obfuscating and...