A new prototype earbud technology could allow users to control their phones with a smile.
Developed by a team led by Denys Matthies from the Fraunhofer institute, the technology relies on an earbud outfitted with electrodes able to detect the change in ear canal’s shape when the wearer makes a different facial expression. A “reference electrode” is attached to the earlobe. As different expressions cause the muscles to move in a certain way, the motion will be translated to a command.
Current, the team says the system can recognize five different expressions and translate them into commands with a 90 percent accuracy.