On Sun, 3 Jan 2010 03:42:50 -0800 (PST), MIG
wrote:

So you put an OEP on and don't use it. Then a few days later you go
from Euston to Tring with a paper extension to your zones and the
train leaves from platform 8, so you touch at a barrier with your
travelcard. Presumably your lurking OEP would then clobber you for
not touching out at Tring?

Which is really bloody silly.

The solution to all this is to remove all situations (other than
equipment failure) where you'd legitimately touch in using an Oyster
and not touch out. This would be done by changing paper BZ extensions
such that they are valid for any journey from inside the Zones the
Travelcard is valid for to the specified destination, but are shown as
only valid when carrying the specific numbered Oyster card shown (and
checked) at purchase (to prevent double-use).

An option not to deduct the "entry charge" on NR when using a
Travelcard could then be offered. This would be done by not putting
any PAYG balance on the card at all. At that point, you'd be liable
for a PF if travelling outside your Zones for any reason using that
card.

So they would be marked as something like:-

==
STD OFF PEAK SINGLE

From: LONDN ZONES 1-3
To: TRING

Valid: Only with Oyster #12345678
==

....and would open any barrier in London zones 1-3, but if an inspector
came around to check then a PF would be due if the appropriate Oyster
was not being carried (not touched in). Thus there would be no need
to touch in at all, and the problem would go away.

Neil

--
Neil Williams
Put my first name before the at to reply.