Hmm, while I imagine cleaning a continuous surface is easier, it doesn't need to be a capacitative one: Buttons beneath a flexing plastic membrane work took, li

Hmm, while I imagine cleaning a continuous surface is easier, it doesn't need to be a capacitative one: Buttons beneath a flexing plastic membrane work took, like the classic microwave number-pad. Pressing those is still tactile, although locating a distinct button by feel would require something else, like adding raised ridges.