On Fri, 3 Feb 2006 13:23:46 +0000, Clive Page
wrote:

I see. But that means that if you lose your Oyster card and report it
lost to invalidate it, anyone finding it can still use it on a bus, and
indefinitely I guess, unless the bus reader downloads numbers of lost or
stolen cards from time to time?

I imagine something like this must occur. But that's rather different
to asking a 'bus reader to contact Oyster Central in real time as each
passenger touches in.