The toilets in the station I commute via daily are like this but without taking contactless payment it's of little use to me. I barely-ever carry cash and never coinage.
I travel quite a bit on the weekends, on the way to my girlfriend, and all toilets that I've seen are nfc-enabled (Baden-Württemberg -- Bayern). Except for Crailsheim. There are Toilets by the Bahn, but are closed at 18:00 or so.
