[Findecanor]

Fitt's Law does not just apply to screens but also to input devices. That is why the keys on the outskirts of a keyboard are larger than other keys.

... except for the anorectic vertical Return keys on Apple keyboards with any European layout: which is a 1×1 key with a small vertical sliver. Japanese "JIS" keyboard layout also has a vertical Return key, and Apple made that properly sized, however.