Hospitals could also use hand controls made of metal with a high copper or silver content, or foot pedals. Maybe also autoclave-able interface boards, or disposable single-use plastic covers.

Too many medical devices are designed to be operated by fingers, rather than a foot. Touchscreens help the problem of hand-transferred contamination, but that is the wrong problem to fix. The problem is that hands are being forced to touch things unnecessarily. No one cares about what feet touch, because feet don't touch patients, and shoe-clad feet can step through a shallow disinfecting bath if necessary.