"Tom Anderson" wrote in message

Am i missing something, or is that still too complicated to do in one
swipe?

Does this have to be done in real-time by smart gates? Or can the
central systems just do the calculations at the end of the day? For
example, if you use a ticket machine to list Oystercard journeys, I
don't think it shows the current day's journeys, which suggests that the
whole system doesn't run in real-time.