glassninja
Here is a smart gadget that lets you monitor your BAC and stay out of trouble. The WearSmith is a Bluetooth breathalyzer with an OLED display. Just blow into it for a couple of seconds to see results. The companion app analyzes your data to let you know when you will recover or be sober enough to drive.
More items like this: here
WearSmith is compatible with iOS and Android devices. It is currently available on Indiegogo.
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