Today’s invention is keyboard buttons which are capable of additional movements than merely in the vertical direction.
As well as creating eg an R on the screen by pressing directly down, these keys would allow a rotary flick to the left to erase the R character if created in error.
Pressing down any combination of buttons simultaneously with one hand, whilst moving the hand laterally across the keyboard, would provide easy, intuitive cursor control across the screen, so that there would be no need for a conventional mouse or trackpad (or ‘nub’).
Flicking each key in any of, say, the other seven major compass directions would allow additional functionality to be programmed-in.
This would also enable many more combinations to be recognised by the keyboard, providing for eg much more memorable log-in passwords in the form of patterns executed with a single, depressed finger.