These cool USB powered Wink glasses can attach to your spectacles to make sure that you do not slip into silent slumber. The idea is quite simple, yet effective. The glasses detect the number of times you blink, and if the number is low then they fog up around your eyes, thus causing you to blink quite a few times. Blinking rapidly for a while can effectively from even the deepest day dreams. The sad part is that it detects a blink once every five seconds to keep from going off. However, when I sat and watched most of the people around me at work I realized that most of them don't blink for over a quarter of a minute. So either the number isn't accurate or my colleagues are all a bunch of wasted.
Moreover, the Wink glasses have to be attached to glasses you are already wearing.
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