<human>:  What technologies are used for virtual reality?
<bot>: The most commonly used technologies for virtual reality are computer simulations, 3D displays, headsets, and haptic controllers. Computer simulations use software and coding to create virtual 3D environments, while 3D displays use stereoscopic images and monitors to create the illusion of a 3D environment. Headsets are used to provide a more immersive experience, and haptic controllers allow for physical interaction with digital objects.