Engineers at Yelp have taken a keg and a tap, an Arduino programmable board, a RFID reader and an iPad, and turned all this stuff in a, literally, cool kegerator: the KegMate.

The iPad tracks who’s been drinking and provides information about beer temperature and rating of recently poured drinks (so you can tell when is time to change keg even if it’s not perfectly empty).

Amazingly, the team worked during the Yelp Hackathon, assembling the KegMate in less than 24 hours, and doing this on official worktime, with explicit permission from the company. This alone is worth a beer!

[via Daily Mobile]