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aptic technology, also known as 3D touch or kinaesthetic communication, uses devices to create a sense of touch. 
It adds the sense of touch to VR experiences, complementing visuals and audio. 
Haptic feedback can be used to simulate different sensations, such as bumping into a wall, gripping an object, or feeling recoil from a virtual weapon. 
How it works:
Haptic devices may use sensors to measure forces exerted by the user on the interface, providing feedback based on these inputs. 
Different haptic systems include:
Vibration motors: Create simple tactile feedback like the buzz of a phone notification. 
Force-feedback devices: Replicate physical resistance, like a joystick tightening during gameplay. 
Ultrasonic waves: Create tactile sensations in mid-air, allowing interaction with virtual objects without physical contact. 
Electro-tactile stimulation: Uses electric impulses to create a sense of touch on the skin. 
Applications in VR:
Simulate virtual objects:
Haptic feedback can make virtual objects feel real, like a virtual fruit feeling solid when picked up or a virtual tool feeling like a real tool. 
Enhance interaction:
Users can feel the resistance of virtual objects, the recoil of virtual weapons, or the sensation of bumping into a virtual wall. 
Provide feedback:
Haptic feedback can be used to communicate information to the user, such as the success of an action or the status of a virtual object. 
Enhance immersion:
By adding the sense of touch, haptic feedback can make VR experiences feel more realistic and immersive.