Hi All,
I have seen on TV commercials that there is a radar to let you know who's mobile phones are around you. Has anyone used this app?

I'm not a phone Tech and the only way I can think of this working is if your phone measures the signal of the surrounding phone's blue tooth and then guestimating a distance and just plotting it on a radial type of radar screen?

Is it just an animated theme or does it actually work?