We bought navigo easy passes and asked to load it with 10 rides a few weeks ago. Two separate purchases, the first time I tried to use a machine and got confused (although I think it's very easy to do, I just wasn't sure if I was buying a navigo card or paper tickets) so I just went to the window and asked, in English for the navigo card with 10 rides, I think it came to 19.40? euro give or take. I used a credit card, tapped at the window, no pictures involved. Very easy. I can use those cards at a machine to reload. I can also tap those cards at a machine to see how many rides are left. The only disadvantage is these cards can't be shared. I'm told you can still buy the paper book of 10 tickets. We had a few given to us by another member of our party who had purchased them in September. Twice, I used a ticket easily, and my husband, right behind me used a different ticket and it didn't work. Once there was a person at the gate, who scanned his ticket and just gave him another one. We couldn't see any differences between our tickets, but I've been told that sometimes the magnetic strip on the paper ticket stops working.