Mobile devices play an increasingly important role in our lives; in some situations, though, they cannot be adequately managed and even accepting a call is a real challenge. In a study, researchers at the Fraunhofer Institute for Computer Graphics Research IGD in Rostock, Germany have evaluated which alternative control concepts are suitable to supplement the conventional use of mobile devices. EarFieldSensing (EarFS), the proprietary development that recognizes facial gestures via a special ear plug, has a lot of potential and offers further development possibilities besides its use on mobile devices.