I am slowly getting my house automated.
I've had for a number of years my whole house with Apple HUE Bulbs so I can turn off/change individually any light in the whole house.
What I am missing is Sensors (or some other way) which is not too expensive to know where I (or a device I have with me). Ie go into the bathroom and the lights come on.. After it seems no movement turn it off etc.
Any suggestions? Somethings I can put in the whole house/all the rooms and then I can write rules on what to do when it seems movement.
Triangulate on a bluetooth/wifi/BLE signal? IR? RFID? iBeacon (http://estimote.com/)