Nearly 700 developers ascended on the Palms Casino Resort with one goal in mind: To build an app worthy of winning one of the many prizes. People came from all over the world to attend the event and put their skills to the test.

After two days of hacking, many of the teams staying up all night to get the job done. The judges had the tough job of choosing the top teams to present at the end of the hackathon.

This year’s winner of the AT&T Developer Summit Hackathon was Anti-Snoozer for their sleep detection driving app.

This driving app uses facial recognition to detect if you’re yawning, blinking frequently, shifting of the pupils, or if your eyes are closed. When any of those actions are detected, your smartwatch will vibrate to try and wake you. To disable the alarm, simply look into the camera. The app will also set off red LED lights to alert other people on the road that you are a hazardous driver, as well as text friends and family at home. Technologies used include Intel RealSense camera, Intel Edison chip, Windows Phone, AT&T Auto API, M2X, Flow, Sponsored Data, and WebRTC.

To learn more about other finalists and the apps they created, check out the AT&T Developer blog.