Skeptical (Score 1)

I understand that this of course is not the end all solution, although I still don't understand what protects someone from hijacking a plane and crashing it into a stadium. I'm not a pilot so I'm not sure exactly where the "no fly zones" are, but as far as I know that doesn't include major cities, especially ones that contain a major airport. I'm also not sure, but is there ever an emergency situation where one would have to cross into a no fly zone?

overall the idea seems practical, but I'm sure it would need some kind of overide protection, which completely eliminates any point to the protection.

Perhaps some kind of monitor on the piolet, like a retnakl scan to operate the plane, and measure pulse, so in the case that the pilots heart races (or drops) the plane sends a silent alarm, and can be remotly controlled