@chris @aral Well, in Europe, Chip + Pin is the norm and contactless payments usually don't allow more than € 25 per transaction or €100 per day - whichever is lower...
Cash is just more normal in Germany and people like myself tend to literally buy cars with it.
So whilst big grocerers will allow you to check out with almost all CCs and Debit Cards [you may have issues with UnionPay, AliPay, DinersClub, AMEX, ApplePay and GooglePay / SamsungPay acceptance] most small kiosks will nope you.