Free-Space Haptics

Haptic feedback technology that applies physical forces or tactile sensations to a user without requiring contact with a mechanical device or surface. Unlike traditional haptic systems that use physical linkages, styluses, or vibrating surfaces, free-space haptic systems create force sensations through magnetic fields, ultrasound, or air pressure. This approach eliminates mechanical backlash and resolution limitations inherent in contact-based systems, making it potentially useful for accessibility applications such as non-visual drawing and graphics exploration.