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[quote]Sleep Safe Tape is a roll of standard transparent 1/2″ wide tape that has pictures of an eye printed along the length of the tape. Many situations exist where it is taboo to sleep despite the natural inclination of humans to rest their tired eyes. Examples include meetings, lectures, and conversations. With Sleep Safe Tape, users can get the shuteye they need while appearing to be wide-awake. Of course, Sleep Safe Tape is a novelty product and might not be used as advertised except by those audacious enough. Those less bold may choose to use it as a regular roll of tape.
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http://www.skforlee.com/independent_work/sleep_safe_tape.html