Dave Newt wrote to uk.transport.london on Fri, 17 Jun 2005:

But the analogy holds, cos you CAN check your Oyster balance before
your transaction.

That's true.

It's two transactions that is the issue. However, if you are saying that
you can only use your payment card ONCE in the machine on the same
day, then I see how it could be a pain - at least with an ATM, you can
put your card in again a second time.

And yes, they only do let you use your payment card once. As a fraud
prevention measure, I suppose, but wouldn't you have thought that with
the same Oyster card, it would likely be the same person paying?
--
"Mrs Redboots"
http://www.amsmyth.demon.co.uk/
Website updated 23 May 2005