In message , at 11:56:38 on Wed, 3 Aug 2016,
tim... remarked:

"In the autumn, keyGo will extend to stations in London and all of
its Great Northern and Thameslink routes - providing coverage from
Brighton to Huntingdon."

A nice bit of doublespeak there - last time I looked the GN route
went all the way to Peterborough. So when they say "all GN and
Thameslink routes" they mean "... but only at stations we can be
arsed to equip, thus breaking one of our franchise commitments".

surely the problem with Peterborough is having to avoid the problem of
people using Main line trains and then toughing out as if they have
used a stopping train (which I believe attracts a lower fare)

No, it's because Peterborough is an East Coast managed station and GTR
haven't sorted out integrating their readers with the gateline.

People catching the East Coast trains on a cheaper "GN only" ticket are
no more of a problem than now with paper tickets. Sorted out by grippers
on the fast trains.
--
Roland Perry