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Portable intelligent shopping device

  • US 8,065,235 B2
  • Filed: 05/05/2003
  • Issued: 11/22/2011
  • Est. Priority Date: 05/05/2003
  • Status: Expired due to Fees
First Claim
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1. A mobile information processing device for purchasing a selected item from a store, the device comprising:

  • a housing in a form of a wrist watch;

    a memory that stores information comprising;

    a card number reflecting a form of payment;

    a private key and certificate for a user of the device;

    a personal identification code of the user; and

    a public key of the store for verification purposes;

    a receiver configured to receive a request for a payment authorization message from a sales terminal in the store, said payment authorization message comprising a price for the selected item;

    a processor operatively coupled with the memory and configured to;

    process the request for the payment authorization message received from the sales terminal;

    generate a price authorization message for transmission to the sales terminal wherein the price authorization message comprises;

    the price of the selected item;

    the card number reflecting the form of payment;

    an e-signature of the user; and

    an interjacence countermeasure that ensures the user that the price authorization message is free from interjacence;

    transmit the price authorization message to the sales terminal;

    an antenna for transmission of signals to the store terminal;

    an input/output subsystem operatively coupled with the memory and the processor, said input/output subsystem comprising;

    a display driver; and

    a display, having several modes selectable by using a scrolling wheel, configured to;

    present the price to the user; and

    enable acceptance by the user of the price responsive to the entry of the personal identification code for the user;

    at least one encryption engine that protects communication between the device and the sales terminal; and

    the scrolling wheel configured to control the display.

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