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Fingerprints and machine-readable codes combined with user characteristics to obtain content or information

  • US 8,108,484 B2
  • Filed: 02/15/2005
  • Issued: 01/31/2012
  • Est. Priority Date: 05/19/1999
  • Status: Expired due to Term
First Claim
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1. A method comprising:

  • receiving video or audio data;

    decoding, using a processor, an auxiliary machine-readable code from the video or audio data, wherein the auxiliary machine-readable code is steganographically encoded in the video or audio data, and wherein the auxiliary machine-readable code identifies a central server;

    deriving a fingerprint, wherein the fingerprint is separate from the auxiliary machine-readable code, and wherein the fingerprint is derived from data representing features of the video or audio data itself without using embedded data;

    sending the fingerprint to the central server, wherein the auxiliary machine-readable code identifies the central services; and

    receiving data based at least in part on the fingerprint.

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