In message , at
14:49:19 on Wed, 26 Oct 2005, turbo remarked:
OK it may be a dumb question, but I don't have an Oyster, but have seen them
in operation a lot. Ok I put a £10 credit or whatever on this chipped card
and start using it- it doesn't have a display on it, neither does the
reader, how do I know the remaining credit... It just seems odd that I could
have a valid oyster on the first part of my journey, which has 'expired' by
the time I get on the bus to make the last part of a journey...

If you know where to look, the gate at a tube station displays the
credit as you go through (I don't know is buses do the same). And you
can examine the card at any tube station ticket machine that has a
reader attached (which is at least one per station, I'd guess).
--
Roland Perry