In article ,
Andy Burns writes:
Harry Bloomfield wrote:

when there are multiple cards, I have
always been told they cannot read the card.

It says that, because it doesn't want to bother reading multiple cards.

My point was that it could read dozens of cards if it wanted to, but
then it would have to get you to pick on screen which one you intended
to pay with.

I'm told that in a similar situation Oyster readers just 'randomly' pick
one card, rather than refusing to read any of them, which could lead to
you not getting the proper discounts.

Oyster readers detect multiple cards. If there's a supervisor there,
they will tell you why the scan was rejected.
(Looks like it's error 71 from a google search.)

--
Andrew Gabriel
[email address is not usable -- followup in the newsgroup]