If I go from Walthamstow to Highams Park, there won't be any actual barriers though will there?
Well, it doesn't matter, if I get there and there are, that means it's integrated so it doesn't matter if I swipe in as I will be able to swipe out and won't lose 7 quid maximum fare 'penalty' (penalty charged by the imbeciles who run the system on passengers who are evil enough to be happening to try and use their system), just the 2 quid or whatever.
Which is how it should have been, like 4 years ago.