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Expert rating7.8
Public rating7.89
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The Problem Addressed
Pretty often, of two (or more) people sharing bed or room, one has to get up earlier. Standard sound-based alarm clocks wake up everybody. A silent alarm clock would wake up the early riser only.
Two Key Features of the Silent Alarm Clock
1.Bluetooth Vibrating Wrist Band: the alarm clock would have a bluetooth vibrating wrist band (see an example)
2.Focused Light Beam: the alarm clock would to turn a focused light beam on.
A deflated inflatable pillow can be put under the main pillow, beneath the bed sheet. Just before the wake-up time, a timed air-pump would start inflating it, thus making further sleeping uncomfortable.
PS: A similar silent alarm clock can be provided to the passangers by conductors in Japanese railroads.
