Authenticating objects using embedded data
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United States of America Patent
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Sep 7, 2004
Grant Date -
N/A
app pub date -
Jul 25, 2000
filing date -
Jul 25, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
This disclosure describes a method of making a secure product using data hidden in the product itself and a method of using the hidden data to authenticate the product. The method assigns a product identifier to the product, such as a unique serial number. It also steganographically embeds security data into the product. The security data includes the product identifier (e.g., a hashed version of it). The security data is embedded such that it is machine readable and enables automated authentication of the product by comparing the security data decoded from the product with the product identifier.
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