Vibrating Glasses Shake You Awake

If I wore glasses, these might have come in handy when I was cramming for college exams oh so many years ago: MyDo Bururu, a pair of glasses that wake up the wearer if she should nod off.

Japan's Vision Optic Co. says the glasses are designed for last-minute, late-night exam studying or driving long stretches of highway. But if you're in a car and the only thing between you and an accident is a vibrating earpiece on a pair of glasses, it seems to me you've got big troubles. A small motor kicks on when it detects that the wearer's head is at an angle that means he is falling asleep. The glasses can be set to vibrate at one of "four levels of head droop." What's the fourth level? In your lap?

These snooze-guard glasses can be had for $370, including the lenses, not ideally priced for students. (Thanks to Plastic Bamboo for the link.) But if you're relying on a clunky, motorized attachment to a pair of glasses to keep you awake for important events, wouldn't a good night's sleep be a better idea? You can't tell me any quality studying is going on between jolts. Or, more importantly, safe driving.

Does anyone see a true need for these?