Something like that (for general payments, not for public transport) used to exist in Germany ("Geldkarte"), but it never became a big success and is now being

Something like that (for general payments, not for public transport) used to exist in Germany ("Geldkarte"), but it never became a big success and is now being discontinued. And personally speaking – not being able to easily look up how much money is stored on that card is somewhat annoying, so I'd rather continue carrying cash in that case.