CES 2015: Feeltact promises communication by digital touch
2 January 2015 Last updated at 15:49 GMT
A digital wristband that allows people to communicate silently through vibration has been developed by French company Novitact.
The screenless Feeltact wristband will buzz different parts of the wearer's wrist in different ways to surreptitiously provide different types of notifications.
The BBC's Leo Kelion tried it out ahead and spoke to Novitact's founder, Thibaud Severini, ahead of his gadget being unveiled at the Consumer Electronics Show in Las Vegas.
Video footage courtesy of Novitact