Thread: Big Brother Key
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      10-17-2008, 09:03 AM   #12
jeremyc74
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Drives: '08 135i Montego/Terra
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Quote:
Originally Posted by MadMan77 View Post
Hmmm... I wonder if this works on those with Comfort Access too? I rarely, if ever, plug my key into the dash.

The only way it could do that is through Bluetooth but I thought the keys worked via RFID.


It's actually possible to write to RFID tags, but I'm not sure the one in the keyfob has that capability. I work with a lot of industrial RFID stuff and I've wondered a couple of times if I might accidentally overwrite my key. I'm guessing it's locked after it's programmed at the factory.

The system used to write to the normal keys is still "non-contact" though. I'm pretty sure they're using inductive coupling for that one.
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