Touch
Today the principal dividing line between keyboards is not technology but touch—what typing actually feels like. A keyboard must be responsive to the touch of your fingers—when you press down, the keys actually have to go down. More than that, however, you must feel like you are typing. You need tactile feedback, sensing through your fingers when you have activated a key.
The most primitive form of tactile feedback is the hard stop—the key bottoms out and stops moving at the point of actuation. No matter how much harder you press, the key is unyielding, and that is the problem. To assure yourself that you are actuating the key, you end up pressing harder than necessary. The extra force tires you out more quickly.
One alternative is to make ...
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