“Toothing” is a new craze where strangers on trains, buses, in bars and even supermarkets hook up for illicit meetings using messages sent via the latest in phone technology.

It is made possible by Bluetooth technology which allows users to send phone contacts, pictures and messages to other Bluetooth-enabled equipment over a range of about 10 metres (yards). Users discovered they could send anonymous messages to people they didn’t know with Bluetooth equipment, spawning a craze dubbed “bluejacking”. Potential toothers begin by sending out a random greeting — usually “Toothing?”.

• A Beginners Guide to Toothing

(Thanks Graham!)