This is a wireless id, because it is permanently transmitting your ID and your status as a beacon, for your gadgets to get to know how far you are, and which your mood is. Your mood could make to be detected by sensors in the wristband that monitors your breathe, corporal heat, and heart beep. Or set manually.
Gadgets will know if you are near, and will execute a profile depending on the distance to your gadget. if friends are near, and they are using this beacon, your gadget can detect them.
More than optimizing energy consumption of every gadget connected, this interacts with your social networks, it manages the atmosphere of the room depending of your mood, and executes presets for behavior depending of who is with you, like playing the music you prefer for that moment, or dimerize the lights.
