In message , at 00:01:05 on Sat, 23
Nov 2013, Michael R N Dolbear remarked:
Here's an article about that actually mentions use on London
Underground
(so perhaps that answers my earlier question, unless the author means
buying tickets from a machine):

http://bankinnovation.net/2011/03/travelex-chips-away-at-us-payment-habits/

date 2011 so probably.

Well spotted. But no doubt such cards with contactless technology in
them would be useful to tourists visiting London (if TfL can get over
the Electron/Solo effect).
--
Roland Perry