''Another step beyond an ergonomic keyboard is a chorded input device, like the BAT from InfoGrip, pictured below:''

http://www.infogrip.com/media/catalog/product/cache/1/small_image/200x200/9df78eab33525d08d6e5fb8d27136e95/b/a/batbase.jpg
*** http://www.infogrip.com/products/keyboards/
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See Also: ErgonomicKeyboard, DataHand
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CategoryKeyboard