I&#x27;ll tell you a true story a few years ago while I was supervising a training session for divers at the swimming pool, someone broke into a some of our lockers. He got away with phones, tablets, credit cards, cash. Stupid crime because we can remote-brick devices now, cancel credit cards, and the money he stole from my wallet was actually Mexican. Anyway, he was captured on CCTV inside the building and outside, but all you can tell from the footage, that the police showed me, was that he was a black guy about 6 feet tall, and that&#x27;s it. So when people worry about the surveillance state I just smirk. None of it actually works in any useful way, it&#x27;s all security theatre.<p>Oh, wait, it is useful for extorting motorists who stray into an unmarked &quot;bus lane&quot;, but that&#x27;s about it.