Getting a ZVV pass in card format
At the moment I have a monthly pass from ZVV, which is in the form of a booklet (i.e. two sheets of paper -- one ID and one with the actual pass), in a plastic holder.
During a ticket check, I think I have seen other passengers having a pass in the form of a plastic card, credit-card style. (Definitely it was not a Halbtax nor a GA). Is that possible? Does ZVV give passes in the form of a card?
I'm asking because my monthly pass is expiring, and I'd like to buy an annual pass, and I'd like to get one in the format of a card because it is more compact.
How do I get one? Does the booklet vs card thing depend on the office which issues the pass?