Following Nintendo's popular Wii system, Xbox released the Kinect device, which lets users control their Xbox and play certain games using only their hands, legs and voices. Still, most of these devices have been more of a gimmick (花招) than a practical alternative, to using one's hands to control a mobile device.

　　While most smartphones and other mobile devices do not come

　　standard with an infrared device, Johansen said a replaceable filter

　　would be an inexpensive, convenient option for most consumers.

　　And even as companies like The Eye Tribe work to create a commercially practical product for the average user, making the eye­controlled technology more accessible and less expensive will

　　have similar benefits for physically disabled users.

　　“Then I can go to any computer, and then I can control it and I can use it, instead of just bringing my own，” said Stig Langvad, who heads up Denmark's umbrella organization for people with disabilities. “So I'll be a part of society on an equal foot, instead of being a special solution.”

　　1．According to the passage, The Eye Tribe ________.

　　A．produces eye­controlled technology for the disabled only

　　B．is established to develop commercially practical eye­controlled technology

　　C．has a history of nearly 20 years

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