Unimodal Interface

An interface that accepts input through only one mode or channel of interaction, such as keyboard-only, voice-only, or gesture-only input. In contrast to multimodal interfaces that combine multiple input methods, unimodal interfaces rely on a single input modality for command recognition. In AAC (Augmentative and Alternative Communication) contexts, a unimodal system might use only head gestures or only hand gestures to select commands. While simpler to implement, unimodal interfaces cannot exploit the redundancy benefits of combining multiple input channels to improve recognition accuracy.