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Keyfob finder

Discussion in 'Gen 2 Prius Main Forum' started by jpetersen, Jul 27, 2009.

  1. jpetersen

    jpetersen New Member

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    Location:
    San Diego
    Vehicle:
    2008 Prius
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    N/A
    I know my keyfob is lost somewhere in my house, but I can't find it. Since the Prius can sense that the key is nearby, I would think it wouldn't be too hard to come up with a little hand-held device that could ping the key and tell you it is somewhere in-range. It doesn't need to do the whole encrypted negotiation stuff the prius/keyfob probably do, but simply get it to ping-back. Then I could just walk around the house until it told me the key was nearby, then it shouldn't be too hard to find it at that point.

    I googled and didn't find anything like this, anybody know if this would be difficult to do?
     
    #1 jpetersen, Jul 27, 2009
  2. dogfriend

    dogfriend Human - Animal Hybrid

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    Location:
    Carmichael, CA
    Vehicle:
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    If you pick up the Prius and carry it around the house, the dome light will light up when you are within a meter or so of the keyfob. :madgrin:








    Yes, this would be difficult to do.
     
    #2 dogfriend, Jul 27, 2009
    1 person likes this.
  3. nthach

    nthach New Member

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    The Prius itself uses a oscillator to produce a homing signal - the encyrption is taken care of in the multiplexer or antenna unit. One would be able to build such a device - but first is finding out what will emulate the factory oscillator setup.
     
    #3 nthach, Jul 27, 2009
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