Neil Williams wrote:

Until the station, and many
like it, are designed to make the crowd flow smoother, requiring everyone
to
touch out will be utterly unworkable.

But it *wouldn't* require everyone to touch out. Only those who have
some PAYG credit.

(I think that's a "user friendlier" way of making the differentiation
than the OEP - "you have to have the money on your card before you
start your journey if you wish to go out of zone").

How many people with season tickets can actually remember if they have any
PAYG on their card? I've sometimes gone months on end without needing PAYG
and so wouldn't know myself. And the aim of the OEP is to prevent fare
dodging by not touching out so how can they check that?