×

Physical presence digital authentication system

  • US 8,509,680 B2
  • Filed: 12/12/2011
  • Issued: 08/13/2013
  • Est. Priority Date: 09/16/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of retrieving data from broadcast programming on a communication device, the method comprising:

  • mixing a data stream with media to be broadcast;

    broadcasting the media including the data stream; and

    processing the data stream on an electronic card.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×