Mouth Interface

An input modality that uses mouth movements - tongue position, cheek puffs, jaw motion, lip gestures, breath, or sip-and-puff - to control a computer, wheelchair, or XR system. Mouth interfaces serve people with limited upper-limb mobility (e.g., spinal cord injury, muscular dystrophy, spinal muscular atrophy, quadriplegia) and range from commercial sip-and-puff switches and mouth-operated joysticks (such as the Jouse) to experimental camera-based ML classifiers that detect dozens of distinct mouth gestures. In XR and VR, mouth interfaces challenge the hand-tracking defaults of mainstream headsets.