PCM Security Switch

I'm looking for an inexpensive security device (<$200) for my Integra. I work at the airport and am gone for days at a time. The parking lot is right by the end of the runway so I don't want it going off every time an airplane flies over!

I read that one could cut the PCM power wire and run it to a hidden switch somewhere under the dash. Only you know where it is, anyone else will not be able to start the car without the switch.

Anyone heard of this? Can it be done? Would this be a good theft deterrent? Is it a good idea to cut power to the PCM- I mean there's no memory that it wipes out when you depower it? And foremost. . .where is it????

How about the Club?

I'm game to any and all ideas on how not to get my car stolen!

Thanks!