While this is a neat use of the Pi, today you can get BLE beacons like the Gimbal Series 10 for $5 (or 3 for free to start) that can act as iBeacons. http://ww

While this is a neat use of the Pi, today you can get BLE beacons like the Gimbal Series 10 for $5 (or 3 for free to start) that can act as iBeacons. http://www.gimbal.com/gimbal-proximity-beacons http://www.gimbal.com/gimbal-proximity-beacons