Safety Lapel Pin
thingiverse
> Safety Lapel Pin design that is inconspicuous to outside world. > Contains a button that is hidden behind a opaque gel-like-cover. > Button is a two step process, with first section activates second mechanism and with further press completes the circuit. > Once circuit is completed, a call is initiated via bluetooth that is connected/paired with your phone/device. > Battery is charged via wireless coil that is embedded in the device itself. > Contains 3 circuit boards, one for power, one for bluetooth and other for logic itself.
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