A strap which effectively turns one of your fingers into a phone – which can send and receive calls -has been developed.
The strap sends vibrations down the wearer’s hand and can be fitted to any watch.
BBC Click’s Marc Cieslak tried it out at the CES tech show in Las Vegas.
Follow all our CES coverage at bbc.co.uk/ces2017
Click will broadcast a CES-themed special this weekend.