I took my son to London and had a great time using the Underground and the bus system. Paying with contactless credit card was very convenient. And the payment cap per day was nice. But I was left wondering about one potential issue.
What do you do if one of you doesn't have a credit card or smart device/phone with payment system? Fortunately, I had two credit cards (we didn't have a data plan in London). So no real problem for us. It still left me wondering what would people do if they a payment method for each person? i.e what if you are riding more than a few times and hit the payment cap due to swiping multiple times per ride. Seems like either a chance to be accused of fraud. Or actual fraud.
What would happen to, say, a class field trip visiting NYC? I'm genuinely curious what people do in those edge cases.