This Smart Strap Will Turn Your Finger Into a Phone

Move over, earphones! You may soon be able to answer phone calls just by pacing your finger in your ear, thanks to a new wearable smart-watch strap developed by a Korean company. Sgnl is a smart strap that can be attached to existing smart-watches, and enables the users to answer phone calls through their fingertip. “With Sgnl, you can keep your cell phone alone in your pocket,” according to the Innomdle lab, a company based in Seoul that developed the device. When you place your finger to your ear, your finger not only transmits the sound but it also blocks out background noise. The device receives voice signal from the phone through Bluetooth. When a voice signal is received, it generates vibration through its Body Conduction Unit (BCU) which transmits the vibration through the hand to the fingertip. When the fingertip is placed to the ear, the vibration echoes to create amplified sound in the ear.