Re: the way forward
I once owned a Mini Traveller which I bet real money people couldn't steal even sitting in it with the keys in hand. I never lost money.
Most couldn't find the starter. It was under the driver's seat - original equipment too - you pushed the solenoid in with your thumb (or, rumour had it, you could use a stiletto heel if you wore such things). It was like starting a helicopter.
But the kicker was that almost no-one could find the battery (under the rear seat). Because in those days there was no need for "vital" electronic components to be powered up at all times people could and did fit simple rotary battery isolation switches. No juice, no start, no theft.
With the advent of the Raspberry Pi it occurs to me that a bright lad could fit an aftermarket device to turn off the ignition and jam the horn on if, after a few seconds, the computer couldn't detect the rfid device on your key fob.
If it weren't for the nanny state protecting the poor criminals you could replace the pansy horn blowing idea with a more manly phosgene dispenser connected to the air-vents, epilepsy-inducing strobe lights in the dashboard and overhead and ankle-level underseat flamethrowers.
Last week a friend was moaning on the uselessness of house alarm systems. I suggested he have his expensive system coupled to his powerful in-ground lawn sprinklers.
"What's the point?" he asked. "So they get wet".
Well, you can't stop the thieving, but you can make it much less comfortable for the bastards doing it, which is why my house alarm has an indoor siren as loud as the outdoor one. The thieves will be able to work with no interruptions from the police, but they'll be deaf for days afterwards. I know. It went off by accident around Christmas and I have the eardrums to prove it.