In message , at 12:25:34
on Tue, 9 Sep 2014, David Cantrell remarked:
Inevitably there will be false positives [a penalty fare charged when
not warranted] which should make a good story in the next day's Evening
Standard. Assuming that anyone notices, which I'm sure TfL will be
hoping they won't.

I've been using Oyster PAYG instead of a paper travelcard for the last
few months. I don't trust it, so check my journey history every morning.
I find that it has screwed up, on average, once a week. And only once
has it screwed up in my favour by completely missing a journey. Every
other time it overcharged me.

You've confirmed what a lot of people only suspected.

I can pretty much guarantee you that there will be *lots* of false
positives. Probably more than with plain old Oyster, because if people
are paying with their bank card they won't think it necessary to sign up
for an account in an obscure corner of the TfL website and to check it
religiously.

And with Oyster there's at least the chance that you can see your
balance disappearing, if you know exactly where to look on a gate for
the fraction of a second it displays the number. I'm quite sure there's
no such facility for the contactless cards.
--
Roland Perry