xxx: St. Petersburg metro made magnetic cards for travel. But only here:
1) re-pass on the card is possible only after 10 minutes (although it is for a fixed number of trips);
2) when buying the card is taken a deposit of 60 rubles; you can give the card and get it back, but for this you need to present a passport;
3) to hand over the card, if there are still travels on it, it is impossible.
It would be interesting to see how this could have been thought of before.

You’re not from Peter, you don’t understand!