Cryptography – Selectively movable element having code characters
Patent
1992-12-18
1994-06-14
Barron, Jr., Gilberto
Cryptography
Selectively movable element having code characters
380 54, 380 57, 283 17, 283 73, G09C 102
Patent
active
053217551
ABSTRACT:
A method of encrypting a sequence of characters such as a code number on an information slide or disc is provided. The method allows the encryption of a plurality of sequences on a single user-markable disc or slide which may be deciphered by a reference to a single code word.
REFERENCES:
patent: 1311457 (1919-07-01), Nicolletti
patent: 1509929 (1924-09-01), Caballero
patent: 4870683 (1989-09-01), Atalla
Barron Jr. Gilberto
The Megaprint Group Ltd.
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