Input Redundancy

A design principle that provides multiple alternative ways to accomplish the same input action, ensuring that users can interact with a system regardless of their specific abilities. In VR accessibility, input redundancy means offering controller input alongside hand tracking, voice commands, and gaze-based alternatives so that users with different physical capabilities can all perform necessary actions. Input redundancy is one of six core design principles identified for accessible VR and relates to the broader accessibility principle that systems should not depend on any single sensory or motor capability.