I went to a new cookie shop yesterday that seemed to be using a reader similar to the one in the Waffle House photo that someone posted quite a long time ago. Unfortunately, contactless didn't work; I kept getting "transaction could not be completed" type errors with my physical Chase card. Inserting did work fine, however.
Given the issues I had, I wonder if contactless actually works properly at Waffle House or if they even use that device anymore for that matter.