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They’re surfaces upon that to put your input devices in order to protect your desktop — or, in my case, to regain a reliable mousing surface after I damaged my desk surface.

A typical page begins, “Automatically operated input devices are switches triggered by a change in a process parameter. Examples of process parameters include liquid level and pressure, fluid flows and material temperature.”

Not every input device needs to have the feedback of a mechanical keyboard, but it’s nice to know when you’ve actually typed a letter on an onscreen board.

The company that loves raving about its input devices is going to need a few new ones and a new software paradigm to match.

Last year, the company released its Surface Adaptive Kit, which was designed to make its existing input devices easier to use.