I’m curious why you seem to think that Fitt’s law doesn’t apply to touch interfaces. Sure, certain concepts can’t be translated 1:1 (like infinite sized targets at screen edges) but even those have somewhat similar counterparts in touch interfaces (screen edges are also special places with larger targets in touch interfaces).
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I’m curious why you seem to think that Fitt’s law doesn’t apply to touch interfaces. Sure, certain concepts can’t be translated 1:1 (like infinite sized targets at screen edges) but even those have somewhat similar counterparts in touch interfaces (screen edges are also special places with larger targets in touch interfaces).
How are screen edges no longer infinite? If I ask you to tap something and drag it off an edge of the screen, you don't have to aim.
Your finger won’t be stopped by the screen edge.