In message , at 11:34:18 on
Wed, 10 Sep 2014, David Walters remarked:

but the exit gate also displayed my fare. I've just checked the online
version and that is matching what I expected to pay and what was shown
on the gate.

I'm not really sure how that happened.

If the gates are online to the "back office" it could be possible to
calculate and display the fare since the last 'touch', but this isn't
the same as a running total for the day.

I think another number

What sort of number - a sum of money, error message...

was displayed in the space I would expect to see
remaining Oyster balance

Hold on - are there two places at a gate that numbers are displayed, the
one you first mentioned and also the "Oyster balance space"?

but I didn't get a proper look and was surprised
to see anything at all.

--
Roland Perry