On Thu, 31 Oct 2013 09:05:04 +0000
Roland Perry wrote:
In message , at
00:12:30 on Thu, 31 Oct 2013, Neil Williams
remarked:
Would this cause problems?

Yes, because the readers are being modified to accept these as a pseudo
Oyster.

I think presenting two different cards always caused a problem. It's the
Achilles Heel of virtually every RFID card implementation.

On the other hand, my dual "Paywave and Oyster" Barclaycard works fine,
which means perhaps it's got some clever avoidance technology.

It shouldn't be too hard a problem to solve - ethernet has managed to do
collision detection since the 80s. I guess it depends on how smart they
want to make the hardware in the card.

--
Spud