In message , at 12:24:26 on Thu, 18 Sep
2014, Mizter T remarked:
It is indeed "apparently simple" About two lines of code could apply
such a discount to a suitably registered contactless account.

You'd need a solid system in place to verify that the payment card
holder really did hold a Railcard.

Then you'd need a solid system in place for RPIs and the like to be
informed that they should also checking for a valid Railcard.

Bit more than two lines of code there.

Actually, all that stuff is already needed for Oyster loaded with a
Railcard.

One significant difference is that the Railcard discount flag is
actually stored on the Oyster card - that's not possible with CPCs
(just possibly might be with a future generation of them).

Irrelevant, because the sums for CPCs aren't done when the card is
swiped, they are done overnight when all the relevant information is to
hand.

RPIs do ask to see associated Railcards.

Good. Whether a paper, Oyster or CPC trip, I hope they would.
--
Roland Perry