With the recent addition of iBeacon support in iOS7 it is finally possible to easily receive positional information inside buildings. This has the potential to be game changing in museums, galleries, shops and other public spaces. iBeacons are built on top of Bluetooth LE which itself provides many new possibilities for interfacing external devices with iPhones, iPads and Macs. Bluetooth LE has opened the door for fitness tracking devices and smart watches. However, an Arduino, Bluetooth LE shield and some additional components allow us to build our own iOS connected devices.