Fividoc technology identifies fraudulent alterations on printed documents:

As a result of four years of research, Fividoc offers a working scheme similar to electronic signature, but working on printed documents:

• Standard HASH algorithms are replaced by new specifically designed algorithms that resist the huge distortions introduced by printing and scanning processes.
• HASH comparison algorithm is redesigned since bitwise comparison is not valid for this scenario.

Fividoc is a summary of new hashing algorithms, channel estimation and equalization, synchronization and decision, specially designer for the print & scan channel.

Knowledge

Secure the document. How to secure the document?
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Validate the document. How to validate a document?
View explanatory scheme