The Combimouse is a combination Keyboard and Mouse featuring a standard QWERTY keyboard and integrated standard mouse. It’s one of the weirdest things I’ve ever seen with a QWERTY layout. Apparently they are still looking to bring this to market.
An early combimouse prototype was succesfully tested by Wichita State University and they say they have all of the issues ironed out. The left unit is stationary and provides the function of the left hand side of a conventional QWERTY keyboard. While the right unit has a similar mass and center of gravity to a typical mouse. It also has a similar grip.
By default the right unit operates in keyboard mode. When the user grips the right unit, it automatically changes to mouse mode. In this mode, movement of the right unit enables cursor movement on the screen and the keys I, O, J, K, L and < become mouse click buttons. [Combimouse]