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Portable keying device and method

  • US 7,376,234 B1
  • Filed: 05/14/2001
  • Issued: 05/20/2008
  • Est. Priority Date: 05/14/2001
  • Status: Expired due to Term
First Claim
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1. A portable keying device for installing an encryption key into at least one electronic terminal, the portable keying device comprising:

  • a memory device for storing the at least one encryption key; and

    a communications unit coupled to said memory device, the communications unit being operative to transmit said at least one encryption key to an electronic terminal according to a pre-determined format, said electronic terminal including a secure memory location for storing said encryption key, said pre-determined format including transmission of an RF signal at a predetermined power level of less than or equal to 1 mW, and transmission of said RF signal in a direction that resides within an angular range of plus or minus 15 degrees or less of a certain direction, and the transmission of said RF signal having a predetermined polarity.

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