Coded data associated with an object and encoding a distributed signature
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United States of America Patent
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Jan 27, 2009
Issued Date -
N/A
app pub date -
Sep 28, 2007
filing date -
May 18, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An object associated with a surface that has coded data disposed thereon or therein. The coded data includes a number of coded data portions, each of which encodes an identity of the object. In addition, each coded data portion encodes at least part of a signature that is a digital signature of at least part of the identity. This allows the coded data to be used to both identify and authenticate the object.
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