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Message service method for mobile communication terminal using position information

  • US 7,392,057 B2
  • Filed: 10/22/2004
  • Issued: 06/24/2008
  • Est. Priority Date: 10/31/2003
  • Status: Expired due to Fees
First Claim
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1. A method for providing a message service for use in a mobile communication terminal, comprising the steps of:

  • establishing a security mode using reading position information as an encryption key and a locking key and for determining a readable position at which a message to be transmitted can be read such that the message is encrypted and locked;

    generating a security message;

    designating a destination mobile communication terminal; and

    transmitting the security message to the mobile communication terminal wherein the security message, which is a message encrypted using the reading position information as an encryption key, is locked using the reading position information as a locking key, and the release of the security mode is performed using the current position information as a release key to release the locking of the security message, and is performed by decoding the security message using the current position information as a decoding key.

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