[QUOTE=BionicMan;1612170]You activate BT and link to somebody and just get in touch. She (but can be a he) will not be far. Then do it live.[/QUOTE]Think it is called BlueJacking. Have never tried but there are BlueJacking applications for iOS and Android as well.
"Bluejacking is very easy to do. It begins with the creation of a new contact in a bluejacker's own phonebook, but in the name field, instead of typing a person's name, the bluejacker types a short message. Then, it's simply a matter of choosing a nearby Bluetooth phoneon a subway or in a shopping mall, for example to send it to. Phones that are in discoverable mode, and thus available to be bluejacked, appear on the display of the bluejacker's phone. After choosing one, perhaps at random, the bluejacker sends the ersatz business card, and the contact "name" (the message) pops up on the bluejacked phone.
Because bluejacking is so easy, it has become almost a fad in Europe, where the first Bluetooth phones were sold. Creative bluejackers have a knack for making it amusing, and some even initiate casual sexual encounters in a wireless ritual called "toothing. " Apparently, not all bluejack targets mind the intrusion. "
