Paul Corfield ) gurgled happily, sounding much like
they were saying :

Of course, there will be major problems when the next 7/7 type
emergency happens and a station has to be evacuated. Normally in such
cases the gates are all opened to ease egress, but how many PAYG
Oyster customers will stop to make sure they won't lose out on a
fiver, thereby causing mass blockage at the gates?

No there won't as there are special facilities built into the entire
system to deal with emergency situations. These have been enhanced to
add new functionality as part of the software developments to support
this change to pre-pay arrangements.

Next question.

I think you miss his point.

The problem isn't a question of "Will people _have_ to touch out?" but more
one of "Will people _think_ they still need to touch out, and try, causing
chaos?"

And, fwiw, I'm sure plenty WILL try to. Even if announcements say "Leave
the station. Do NOT stop to touch out"