In article ,
Paul Corfield wrote:
Well you can, of course, choose to completely ignore the basis of the
business case for cashless boarding and the associated time savings for
passengers, reduced dwell times and other factors if you wish. Just
because you only assess things with the evidence of your eyes does not
make you correct and everybody else wrong.

On reflection, I can see the argument for the machines in the central
zone, where there will be many more tourists and other vistors from
out of town, but elsewhere it would probably have been adequate to let
the occasional cash customer purchase their ticket from the driver.
The price differential between cash and Oyster fares ensures that
Londoners will be using Oyster anyway.

-roy