In message , at 07:44:36 on
Fri, 14 Dec 2012, David remarked:

Do contactless credit cards store the journey like Oyster cards?

I think they may store something, in order to trigger the "time to ask
for a PIN" routine (for regular transactions).

Blub from TfL says that if an inspector gets on to check tickets, you
just show your card in the same way as Oyster.

Do they attempt to read it?

One possible mode would be for the inspector to download a "recent
charges" history from the *bus* when he gets on, and checks the numbers
in question against any paywave cards he's offered.
--
Roland Perry