Excellent post, donnay! And my hat goes off to the engineer who performed this experiment. I wish I could buy him a beer -- or more like a case. THIS is the kind of ingenuity we need in our struggle against totalitarianism.
With so many engineers and scientists doing everything in their power to find new technologies to destroy our privacy and liberties, I think engineers/scientists who care about freedom have a special duty to try to look for countermeasures. The simpler, the better.