Application system with function for preventing modification

Details Application system with function for preventing modification Application system with function for preventing modification

2007-06-12

2007-06-12

Huynh, Cong-Lac (Department: 2178)

Data processing: presentation processing of document, operator i

Presentation processing of document

Layout

C382S188000

Reexamination Certificate

active

10770495

ABSTRACT:
A digital pen-based application form filling system with a modification prevention function, which eliminates a possibility that digital information initially written in digital paper using a digital pen may be modified deliberately or accidentally. The system prints a new fine pattern over areas in already written digital paper whose contents one wishes to protect against being modified. This printing adds a fine pattern to an original dot pattern already present on the digital paper to make it theoretically impossible to enter information into these areas using the digital pen.

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