an omnidirectional treadmill (ODT), which was featured in Ready Player One. ODTs are already available on the market. They include a frame-mounted shoulder-worn harness, which detects the force applied by the user’s body and protects the user from falling. This ODT rotates at the same rate as the user’s movement, so as to always keep the user centered. The treadmill can be tilted to simulate hills or stairs. This allows essentially any movement without the danger of falling.
