by fixer » 13 Jul 2005 18:57
This is more of a topic for the advanced forums, but here is some general background info that is openly available.
The transponder in a key bow is an active device, but only trasmits a signal when placed near the induction loop of the vehicle ignition. This signal contains a code (password) which must already be known to the ECU of the vehicle before the engine will start.
As far as I am aware, there is no tool for finding out what transponder codes are stored in the ECU. However, there are tools for adding and removing codes.
Some transponders can be duplicated, others are encrypted and cannot be copied. But if it is copyable, you have to have the original, which car jackers don't have.
Much like picking a lock with just a rake, the movies don't often show the real deal.
Fixer - Recovering sys-admin
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Remember Luke, the force is like duct tape. There is a dark side and a light side and it binds the universe together.