You can use the following ticket machines to pay for tickets using your debit card and PIN instead of cash:
A service provided by the MVG
You can pay for your tickets by credit card for your tickets at all MVG ticket machines with touchscreen located in U-Bahn (underground) stations and in the following MVG customer service centres:
Accepted credit cards: MasterCard, VISA and American Express.
A service provided by the Deutsche Bahn
You can pay for your tickets by credit card at all ticket machines located in S-Bahn stations and in the following customer service centres:
Accepted credit cards: EUROCARD/MasterCard, VISA and Diners Club