BACtrack’s C6 personal breathalyzer uses the same BluFire® tech trusted by hospitals and law enforcement, but it’s small enough to fit on your keychain. It comes with a companion app that tracks your results over time, and can even call an Uber or Lyft if you’ve had too much. Use code BAC15 to get one for $51, saving over 25%. Full details here.


StackSocial brings you deals on software, apps, gadgets, tutorials, and design. So to be clear, this post is not editorial and we make money on sales.