Scott Jenson on Nostr: I did haptics research at Google and a trick I used was to use a dot of super glue on ...

I did haptics research at Google and a trick I used was to use a dot of super glue on slick surfaces to create a braille like surface. Your fingers are remarkably sensitive to this. I used it for button centers but you could try the corners and centers of each side. Apply it with a toothpick. It wears like iron... A razor blade takes it off