> You can purchase one without your name and address but you can only add money to it using your bank-account. The system tracks all travelers' movements (departure and end points for each leg of every journey), in most cases combined with the traveler's identity. It retains the data for seven years

Not to discredit your whole post but is this really the case. You can buy those 1 hour/24 hour/48 hour passes for cash. With a 1 hour one you aren't exactly required to check out if you don't use it again (on tram at least).