Those of us Israelis who travel on public transportation on a regular basis have been using these personalized prepaid cards called RavKav, which we finally have figured out how to use. There's one big problem with them, and that's knowing how many trips are left.
On occasion, admittedly too rarely, I fill them up with two types of tickets. One type is for the Jerusalem lightrail and buses, and the other is good to take me to and from Shiloh and Jerusalem plus Sha'ar Binyamin where I work. The Shiloh-Jerusalem tickets always get used up first, no matter how many I pay for, but I can always pay cash. If I'm in Jerusalem without a valid Rav-Kav I can pay on the bus but not on the train. And if I buy a one-time ticket at a train machine, I won't get my senior discount. Another quirk is that if you've paid for a few "series" of tickets they are listed separately on the card, not added in one sum. When I've asked the clerk at the bus station how many rides I have left, I'm told:
"Three and five and twelve."
The clerk doesn't see the number twenty on his machine.
The train's ticketing/paying machine isn't good at opening a new series. It just doesn't seem to recognize them. I've had a few panicky moments when the red "empty" shows on the trains "validation" machine when I'm certain and can even prove I've recently paid. I even ran off the train to take the next one when I saw an inspector. And then that very same day I paid with the same card on the bus, and it showed that I had a full series left.
Since I'm always rushing and need to have reading glasses to see numbers on the machines, I never get to check my card. I very, very rarely take the bus home from the Central Bus Station where I can fill Rav-Kav for both types of trips by using a credit card. Yesterday, since I needed to buy something from a store in the bus station and I wasn't in a rush to get home, I figured my Rav-Kav was due for some filling up. There hadn't been any rides left on it between Shiloh and Jerusalem for weeks.
I handed it to the clerk, luckily not one of the usual scowling ones who make these purchases so unnecessarily unpleasant, and asked her how many rides I have left:
"Zero."Yes, my friends, G-d is GREAT!
"What? I just used it."
"Well, I guess you came her on its very last ride."
"Baruch Hashem, what a miracle!!"