On Sat, 24 Mar 2012 11:10:53 +0000, Roland Perry wrote:
Meanwhile, there was some speculation earlier about exactly how the chap
was misusing his Oyster. They showed him touching in then out again (but
staying in) which tricked the card into not registering the start of a
journey. What they didn't show was how he was touching-in at a station
closer to his destination, in order to be able to touch out (at a lower
fare) at the destination without incurring a penalty for an unresolved
journey.

I thought he was travelling from zone 2 to zone 2, via zone 1, with a
zone 2 season ticket. If that is the case an unresolved journey isn't a
problem so on exit he doesn't need to touch in first once he has touched
in and out at the start.