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... won't you have the same issues as you do with touch keyboards on current tablets? The biggest advantage in the medical field is obviously the projected keyboard is the I/O for a desktop-grade machine rather than a tablet and you're certainly right about the cleaning/disinfecting aspect, but accuracy can suffer if the user is a trained touch typist and is used to the haptic feedback of the touch surface itself, meaning at least some tactile sense that you've actually triggered the keys. Capacitive touch or projected touch would sense every finger as a touch when the hands are positioned on the home row. How, then, would the device know which touch was intended as the typed character?