I'm not sure but I could have sworn I'd seen some place selling a gas additive that would give your exhaust a scented smell. - Like vanilla or cookies or bananas or something like that.
If they could make an affordable system for the general public it might prevent thefts from places that aren't closely monitored. It'd be like your own Walmart passthru sensors. They'd have to be easy to conceal so that crooks wouldn't notice them and remove them. It'd be great if GPS tracking would be an option too but I could see the cost getting too high.I lost several thousand dollars worth of partsother goods from our farm this past year. I would have loved a heads up on what was going on.