In message , at 20:51:18 on
Wed, 23 Apr 2014, Richard remarked:
a user should be able to keep to the "always touch in and out"
requirement -- regular, tourist or whatever. It isn't difficult!

There are still bear-traps for the unwary. For example getting off a
train at a London terminus having travelled that far on a paper ticket,
clutching an Oyster for onward tube travel, and using it to "always
touch out" at the barrier line, results in an unresolved journey.
--
Roland Perry