Neil Williams wrote to uk.transport.london on Fri, 11 Feb 2005:

On Fri, 11 Feb 2005 08:50:58 +0000, k wrote:

...and so much more useful! Why *can't* you load a ODTC onto oyster?
Surely its not technically difficult?

Because it wouldn't be a true ODTC, because you couldn't use it on
National Rail.

Why not, since you can use a period Travelcard on national rail, even if
this is on your Oyster? The suburban service ticket-checkers all have
Oyster readers for just this reason, and those stations within the
network that are gated have touch-in/out pads.
--
"Mrs Redboots"
http://www.amsmyth.demon.co.uk/
Website updated 23 January 2005 with new photos