I have read an article a couple of month ago about this start up company which makes bluetooth 4.0 gadget which you plug into an outlet and which then controls the lamp for example.
This gadget senses when your phone is near and turns on the light. When you leave it turns the light off.
They also had this video on their website where a guy comes in a dark room and then the light turns on.
Does anybode know their website? I can not find them anywhere.
Cameras that make great holiday gifts
Let them start the new year with a step up in photo and video quality from a phone.