Hmmm...how about if I shout at it. A pass phrase of course, not just incoherent furious shouting. That shouldn't that hard? Two pass phrases, "snooze" and "off". You'd have to record yourself saying it so it can pattern match of course. And as such you could record any pass phrase you like. I guess you'd have to activate the mic right before the alarm starts playing, and you'd have to have waveform subtraction to remove what ever was playing so it can try to match your recorded "snooze" or "off" phrase to the mic input. Should be easy!