Hacker (and fellow amateur thesp) Michael duPont attended a hackathon at Universal Studios in March and helped to create a system whereby guests to the theme park could bypass ride queues by visiting certain checkpoints in a park area, thus completing ‘challenges’. This was accomplished using iBeacons. He has written an Instructable which takes you through the process of setting up a Pi as an iBeacon and then acting as the ‘gateway’ device for the system. Read it here. See a demo of the hackathon device below.