Theft deterant. What do you use? Options

[surfdogskier]

We just had a car show up here in Pigeon Forge the last couple of weeks. As usual every year, a bunch of cars get stolen. An I mean nice collectables. I would think it would be a no brainer to put some type of theft deterant mechinism on these babies.

What do you guys use on your rides to help make sure your baby is where you parked it when you come out of wherever?

Looking for some ideas and details.

Thanks,
Jason

[bretth]

I thought of an very impractical but interesting theft deterrent today. My daily driver was in storage while I was moving to a new home. When I got it back, it now smells of mold inside. So I put a ozone generator inside the car this afternoon while it was sitting in my driveway. Problem is that I had to leave the key in the ignition so that I could run the heater fan to circulate the ozone through the vents. At first I was concerned about leaving the car unlocked with the keys inside but then I realized that the lung burning ozone would have sent a potential thief running for fresh air.