The BCK design team, including Vera Kade, Javier Bertani and Ezequiel Castro created a very original communication device, a phone accessory concept that includes a microphone and a headset. They are shaped like rings and placed on the fingers of the user.
You can wear the rings on the thumb and little finger, so they’ll connect wirelessly to your handset. In order to make a call you need to make the classic call sign with your fingers (point the thumb and little finger towards the ear and mouth, respectively) and it’ll work thanks to incorporated distance sensors.
[via The Design Blog]