[__MatrixMan__]

> Using my sense of touch to sense the key's exact location before even trying to activate the key helps me do that.

I like to use different kinds of keycaps on the same keyboard to give myself tactical hints for this reason. It's common to have `f` and `j` differentiated, but I also have different textures for differentiating the alpha keys from their neighbors and for what I consider "home" for my thumbs.