Riding a bike in an urban environment is great for health, great for the environment, and in many cases faster and easier than driving. But let’s face it: Taking a bike to the mean streets of the city can be a dangerous proposition.

Thankfully, technology is stepping in to make riding a little more safe. The latest entry is this incredible censor that sticks to a helmet like a sticker, then links to a smartphone via bluetooth. When it detects a crash, it uses the phone to call preselected emergency contacts and sends GPS coordinates.