http://news.bbc.co.uk/1/hi/england/london/6161498.stm

"Passengers are being warned to use their Oyster Cards correctly or face
paying more for their journeys.
From Sunday, if passengers do not touch the electronic smartcard on the
reader on entry or exit to a station, they could be charged up to £4.

The cost of not doing so could rise to £5 if journeys are started or
ended at certain national rail stations.

Transport for London said if the card is not scanned it does not know
the correct fare to apply."

How to confuse absolutely everybody. I've already seen people looking
very confused when they have heard the announcements and read the
posters about the change to pre-pay only rules. Shame no one has made
that distinction in the publicity.
--
Paul C


Admits to working for London Underground!