Alarm clocks have been developing more and more unique ways to wake people up over the years, but being woken up by a stranger has always been something of a difficult proposition. Sure, you can use an old fashioned wake-up call service, but then you still sort of "know" who's calling you. Not so with the Talk O' Clock service -- soon to be available for Android and iOS devices, in addition to the current web-based app -- which relies on the power of social networking to ensure that a complete stranger calls to wake you from your slumber. Yes, it is real -- and, yes, you should proceed with caution (although you can at least rest assured that the person calling you doesn't actually see your phone number). It's still at the invite-only beta stage right now, but those seem to be readily available to anyone with a Facebook account. See how it works in the videos after the break.

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