Why sight alone is insufficient
Hand tracking can estimate pose in space; force or pressure sensing can register an actual squeeze, button press or load against a surface. Combining inputs can reduce ambiguity in interactions, but optical tracking and physical sensors often work best together.
Wearable controllers and surface interaction
Sensorized gloves, wrist-worn interfaces, game controllers, pressure mats and responsive furniture represent plausible product directions. Each needs user intent interpretation and protection against false activations and fatigue.
Sensing versus haptics
A sensor measures an interaction; a haptic actuator generates a sensation. Rich immersive systems may need both, with careful synchronization between touch signals, visuals and feedback. A high number of pressure sensors alone does not create realistic force feedback.
Who builds and what must work
Consumer interface OEMs, XR accessory teams, gaming hardware manufacturers and accessibility designers need reliability, battery life, compatibility, calibration and affordable manufacturing. Low latency and comfortable long-duration wear can matter more than an impressive laboratory sensitivity.