In message , at 11:43:25 on
Sun, 17 May 2015, Jarle Hammen Knudsen remarked:
On Thu, 14 May 2015 08:15:19 -0700 (PDT), Offramp
wrote:

What does back office version mean?

An Oyster card that works the same way as a wireless

usually referred to as "contactless"

payment card,
where the fare calculations are done in the back office at the end of
the day. Instead of a bank account, the Oyster card is linked to a TfL
account where you deposit money.


--
Roland Perry