Did you notice that since Windows 3 Microsoft keeps adding Unix-like features? Windows 3 did not have _real_ multitasking, it came with WinNT. Windows NT was also a multi-user system, another Unix-like feature. With Windows Vista came the Windows power shell, M$ equivalent of Unix shell. In fact, Unix is an ideal, which Microsoft is approaching in each new Windows release.

I rather meant that the crank handle would be rather useless if you hands are injured, blown or like. But then you can grab the crank handle with your teeth. Other solution would be building a damn cool RFID embedded into the dog tag. It could be read from a an overflying aircraft. RFIDs can be be actually designed to be read from decent distance. Of course the RFID has very limited power, so encryption would be weak.