"Paul Corfield" wrote in message
...
On Sat, 4 Aug 2007 13:21:23 +0100, Roland Perry
wrote:


To do anything other than have a common standard would result in the
anarchy your posts are envisaging. This explains why we tried so very
hard to get ATOC interested in Prestige so that the current
compatibility from magnetics could be carried forward. We didn't get
there but the ITSO compatibility programme for Oyster should get us to
the right place as well as the TOCs working with TfL in the London area
to get their retailing and validation sorted out.

In part of my earlier post that Roland snipped I wondered how Oyster PAYG
worked its way back to the mainline TOCs that are using it already, Paul, is
this done on a statistical basis - Chiltern services for example?

Paul S