Authentication using a digital watermark
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Nov 1, 2001
app pub date -
Mar 8, 2001
filing date -
Mar 9, 2000
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A method and apparatus for identifying an object include encoding physical attributes of an object where the encoded information is utilized as at least one element for composing a digital watermark for the object. In another embodiment the physical attributes of an object are utilized as a key for accessing information included in a digital watermark for the object. In a further embodiment, a digital watermark is incorporated into a bar code. As another aspect of this embodiment, information may be encoded into the digital watermark of the barcode and may be decoded or otherwise retrieved by the use of a key. The digitally watermarked bar code may function in a conventional manner or may also include a 'pass key' to allow reading of the bar code itself.
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