when ticket inspectors get on bus and check oyster cards, what information do they see in their machines?

Question

In london?

Answer 1

when you registered your oyster card you had to give away your name, address etc. I also found to my unpleasant suprise that nearly every journey you make (including time & date) will be recorded on the oyster card (or the system used by the oyster card)

I guess they check your last fare to ensure you did beep your oyster thingy on the bus thingy.

I rather pay more for an old-fasioned travelcard as long as I keep private & personal information to myself!