Because that is a lot easier said than done, all told? As we get faster and faster machines with more and more spare cycles, we can probably devote a lot to th

Because that is a lot easier said than done, all told? As we get faster and faster machines with more and more spare cycles, we can probably devote a lot to this sort of thing. Maybe. And, really, this is no different than anything else. Just in an odd "reverse" direction. Lets say someone makes brake pads for your car that have an antenna and compute on them. How would you keep them from communicating your location to anyone else? You can work on detection, of course, but for the VAST majority of vehicles out there, this would be silly at that point. Same goes for why you use locks that can typically be unlocked with a toothpick in bathrooms. Privacy locks are vastly different from security locks. Even though they look roughly the same on paper. And this is clearly ignoring every other thing that makes you vulnerable outside. Why do we allow satellite imagery of people in their backyard? Mainly because we don't have a realistic way of disallowing it.