> software power/reset And if your software hangs? Hard buttons are a nice safety. Even one can be wired to some simple microcontroller that'll power cycle th

> software power/reset And if your software hangs? Hard buttons are a nice safety. Even one can be wired to some simple microcontroller that'll power cycle the entire device is held for 30 sec or some such thing. Doing it via a much more complex interface (touch, etc) isn't as foolproof