Feeling Virtual Environments With Ultrasound

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Force feedback has become commonplace in today's game controllers. To many, the simulated forces create a more realistic game-play environment. A group of scientists at the University of Tokyo in Japan are on working on a new technology that can potentially allow force feedback-type sensations and controller input without the need of a joystick or other physical input device at all--all feedback sensations and input could be done simply in "mid air." The scientists, Takayuki Iwamoto, Mari Tatezono, Takayuki

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