I'm sure my neighbor, who's blind, would appreciate piezo buttons. I had to help her deduce why her screen reader would "die" on her Dell laptop periodically. I

I'm sure my neighbor, who's blind, would appreciate piezo buttons. I had to help her deduce why her screen reader would "die" on her Dell laptop periodically. It turns out that it has capacitive buttons for Mute/Volume, and the only feedback from them is an LED. She would occasionally brush her fingers over the buttons and end up inadvertently muting the laptop.