Probably you’ve heard lots about various types of alarm clock that are trying to get ones out of the bed. Ones require to solve some math to turn it off, others use flying helicopter that has to be found and put back, but still after doing these tasks there is still a “risk” to get to bed again. But I bet this one beats them off as it detects you are still in bed.
I know such alarms are real pain in ass and they don’t last very long, but they can save your but from meeting your boss because you’re late to work.
This particular design uses a e-field sensor placed in the bed and detect whenever sleeper gets back to sleep after alarm triggers. E-field sensor is interfaced to PDA where alarm can be turned off – actually bumped off for nine more minutes and if sensor detect you’re still in bed it starts alarm again. So don’t be late again!