In message
-septem
ber.org, at 12:34:55 on Mon, 18 Sep 2017, Recliner
remarked:
my question is

did they in fact manage this in the time available before they stopped the
guy at Dover

or

did they just get lucky because he gave himself away, some other way

My interest here (as a tech professional) is in assessing the state of the
art of the technology to do this in 12 hours, where previously it might have
taken them 3 weeks (or more)

It seems he was arrested at Dover on other grounds.

No, or forged, passport/ticket?

Only later did they discover he was wanted fir the attempted bombing.
So they got lucky.

--
Roland Perry