On Fri, 27 Nov 2009, Neil Williams wrote:

On Fri, 27 Nov 2009 04:41:58 -0800 (PST), John B
wrote:

Under your "touching out is mandatory for Travelcard users" model, I'd
be penalised for doing this, because I'd have touched in at Waterloo
and wouldn't have touched out anywhere.

No, because you'd mark the BZ tickets as "only valid with Oyster card
number N" and make them open the barriers at both ends, so you wouldn't
touch your Oyster at all.

So you'd actually be buying a single, and paying for it with your oyster
card. Sounds sensible.

tom

--
.... a tale for which the world is not yet prepared