New through Zen Racing in the UK, the Pocket Pit lap counting system uses a small line of sight infrared transponder to send a predefined code to the track side receiver box. The receiver box in turn connects to a mobile device using Bluetooth to automatically count and time your laps using a real time stopwatch within the Pocket Pit app. You can therefore listen to your lap times live as you race using headphones or through your devices speakers. Lap times can be saved with notes enabling you to keep a database of setups for the tracks you race. Currently available for iOS only it requires 3x AAA batteries which are not included.