When Joe the Plumber exposes his coin slot, it's usually not for tips. Here's an ingenious device by Amy on Instructables that vibrates to give you fair warning that your goodies are on display.
Using a photoresister, the light hitting the coin slot triggers a small vibrator to alert the pants wearer that their posterior can be viewed by the world.
Implications - With so many people on busy schedules, consumers are constantly looking for ways to stay alert. From alarm clocks to smartphone apps, people need something that helps them stay ahead of schedule. Products that help consumers avoid mishaps and keeps them alert at all times are increasing in demand.
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