Nokia proximity detector

A little bit of silliness to brighten the afternoon… My girlfriend (name hidden in the image below to protect the innocent) is amazed that I can tell when she’s arriving home and be at the door to meet her (sometimes with the kettle on for a restorative cuppa). Can I tell her footsteps as she walks down the corridor? Is it the jangle of her door keys? Do we have special ESP?

Nope! Our apartment block is a new construction that doesn’t seem to block wireless signals much and her phone connects to my PC as soon as she’s outside, 2 flights of stairs away… 🙂