On Sun, 11 Jan 2004 11:47:04 +0000, Kat wrote:

I don't think that's exactly what you meant though.

I think the OP may have been referring to a Direct Debit billing scheme,
with payment after use. As yet there is no such thing - but I wouldn't
rule it out in the future - though there may be implementation
difficulties as the 'key' information (credit, journeys) is AIUI stored on
the card rather than centrally.

Neil