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Re: [Electronics_101] Shopping cart security

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  • Robert Graf
    ... From: Tom To: Sent: Wednesday, May 29, 2002 1:30 PM Subject: Re: [Electronics_101] Shopping cart
    Message 1 of 5 , May 29 6:30 PM
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      ----- Original Message -----
      From: "Tom" <yahoo@...>
      To: <Electronics_101@yahoogroups.com>
      Sent: Wednesday, May 29, 2002 1:30 PM
      Subject: Re: [Electronics_101] Shopping cart security


      Well perhaps he wants to know stuff like how the circuit gets powered and
      what kind of RF signal activates it. I am curious to know myself.

      Tom

      It gets powered like almost all mobile equipment, with a battery. As for the
      rf signal, it's probably probably digital over a publc use band. It might
      also operate like an electric fence for keeping dogs in the yard.
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