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Thread: bluetooth keyless entry

  1. #1
    Newbie blahgod's Avatar
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    bluetooth keyless entry

    i've heard of some new cars coming out with this feature. basically when you walk up to your car the doors unlock, when you walk away it locks itself back up.

    any ideas on how to convert a existing standard keyless entry to the automated bluetooth style? or adding the feature to a carpooter.

  2. #2
    Variable Bitrate rubicon's Avatar
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    This would be sweet. Anxiously awaiting epiration of my VZW plan to pick up a phone with bluetooth @ Cingular.

    Was zum Teufel is a "carpooter?" Is that when you close the window & fart?

  3. #3
    Newbie blahgod's Avatar
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    closest alternative "starting point" i could find for this is here:

    http://www.thinkgeek.com/gadgets/security/698d/

    the 2m range seems a bit weak and its not BT. gonna keep searching, if anyone has any input or theories im up for all ideas on this one.

  4. #4
    Variable Bitrate rubicon's Avatar
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    There's a GNU/Linux PAM module available for that thing... Wonder how wise it would be to hook one's CarPC up to the door (un)locking mechanism?

    Would be sweet tho - door could be unlocked & PC powering up as I settle my tuchus into the driver's seat; then booted & playing by the time I'm ready to go.

    Of course, there's the whole starter-sucking-all-the-power-in-the-vehicle issue, which of course doesn't make for a happy computer... Maybe a big cap?

  5. #5
    Variable Bitrate rubicon's Avatar
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    Found this: PAM x509 Authentication Module

    Excerpt:
    "This module provides password-less login authentication on local consoles based on X509 certificates and private keys stored on some personal data holders like USB Sticks, Bluetooth mobile phones and etc..."

    Needs GNU/Linux + Bluetooth with OBEX (in order to use BT), and you'd have to wire up a circuit to control your door locks (and have the computer on, of course...)

    But its a possibility.

  6. #6
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    you can always go a non-carputer method...

    i can't confirm this, but I'm told that the compustar paging alarms have a feature where you can set it disarm the alarm when u get close to the car.

  7. #7
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    http://www.12voltshop.com/proddetail...t=19&path=1,19


    ^^ think it something like that your looking for

    basically the idea i took was to strip it down and attach the output to my standard keyfob that would be sealed in a unit hid in the car. The theory is your allowed approx 100 pulses before the standard key fob goes out of sinc so by hooking it up to the output u can set it up to pulse the deactivation code a few times and vise versa for the lock feature.

    it's alot more complication if you want to add a push start button as well.

  8. #8
    What can I say? I like serial. Curiosity's Avatar
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    I'm just waiting on something like this but with about 5 inputs and 5 outputs to connect to the existing alarm. Then I just have to figure out how to write something on the cell phone or an ipaq if that doesn't work.

  9. #9
    Maximum Bitrate carpcnoobie's Avatar
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    Quote Originally Posted by rubicon

    Was zum Teufel is a "carpooter?" Is that when you close the window & fart?

    duetschlisch.... sehr gut
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  10. #10
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    Well, for now, I'll just add a little background info on the current GM system used in the 2006 Corvettes and Cadillac SLR. The system uses 3 in-car antennas, one in each b-pillar <basically right next to the door striker on the car> and one in the area between the seats and the trunk. The 2m range quoted in the previously mentions dongle security system is not far off, as for door unlock, the key fob will be within a meter or so of the respective antenna. However, on the GM system, the 3 antennas can also triangulate the signal to recognize the location of the key fob, thus the system can unlock either door or the trunk sepearately as you approach a certain side of the vehicle. The system will also recognize when the fob is actually inside of the vehicle, and allow the car to start only with the key fob inside.

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