In message , at 12:32:59 on
Tue, 4 Feb 2014, Paul Corfield remarked:
I assume this is part of a long campaign to change behaviours in
advance of contactless bank card roll out in May this year. There
will inevitably be more and more gates and validators with updated
software loaded that will detect bank cards stored alongside Oyster
cards. This means people will suffer card rejections at gates /
validators and may not be aware as to why it is suddenly happening.

I believe there were issues at the station when the test software was
downloaded.

When put in that context it makes sense surely??

Only if one accepts that the designers of both the Oyster and PayWave
technologies were incapable of working out how to exclude clashes.

One obvious possibility is if we can see both an Oyster and a Paywave,
then "we'll assume it's the Oyster that this particular passenger wishes
to use, as long as it has credit".

Although adding in ITSO as well might require said boffins to be able to
tell the difference between three cards.

Why is any of this not absolutely predictable in what's an extremely
controlled environment?
--
Roland Perry

Only if one accepts that the designers of both the Oyster and PayWave
technologies were incapable of working out how to exclude clashes.

I have two PayWave cards. Which one should it pick?

This impresses me as an opportunity for wallet makers. I have a
wallet with a built-in tinfoit hat that shields all of my RFID cards.
You can see it he

http://www.youtube.com/watch?v=1d_8bn_4yx8

For the commuters, it wouldn't be very hard to make a version of this
wallet that has one deliberately unshielded slot for your Oyster or
whatever.

--
Regards,
John Levine, , Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. http://jl.ly

On Tue, Feb 04, 2014 at 01:09:13PM +0000, Roland Perry wrote:

Although adding in ITSO as well might require said boffins to be able to
tell the difference between three cards.

If only there were some closely related technology which had had to solve
problems like these before. Then people could learn from the past and
come up with something that works instead of just failing ...

http://en.wikipedia.org/wiki/CSMA/CD

--
David Cantrell | semi-evolved ape-thing

Planckton: n, the smallest possible living thing