There is one great secret embedded - the tie between your car and the related databases for it... it is now easy for many makes to generate the lock/ignition key for a car, simply by having the VIN. Car theft rings have caught on to this and now have a relatively easy way to steal cars with no damage - take a quick digital photo of the VIN # one day and come back another with the key!
That's why I've now covered the VIN #s on my cars so you can't see them from the outside - a piece of black cardboard or electrical tape over the VIN plaque takes care of it, and you can remove it if/when needed.
Based on other threads here, it sounds like
Boxsters don't totally suffer from this (you need to "train" the key with the car and a PST2 physically in one place to use it in the ignition?) but I'm erring on the cautious side and have the Boxster VIN covered just like my daily driver's.
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