On Fri, 30 Nov 2012 01:57:12 +0000, Steve Fitzgerald
] wrote:

My understanding is (from being involved with a group that accepts cards
and gets all the card acceptor bumph) that this Pay Wave will only work
for a number (ISTR about 5 or 6) of P-W transactions before it then
requires a PIN input. [...]

Now, how this works with the bus scenario is an interesting exercise for
the reader but could explain some of the 'issues' that have been alluded
to.

It would be impractical to ask for the PIN on a bus, at least in
London... I wonder whether there is a way for the retailer to accept
higher risk in return for never (or much more rarely) requiring a PIN,
especially as no real goods are involved?

Richard.