Reliable document authentication system
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United States of America Patent
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-
Aug 1, 1989
Grant Date -
N/A
app pub date -
Dec 18, 1987
filing date -
Dec 18, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for reliably authenticating a document includes a device having a decryption key therein that, upon application to information provided by a user, reveals not only a plain text message indicating the source of the authentication but, in addition, provides the decryption key for use with the information provided by the mailer.
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