Very interesting...
... and it sounds like a sensible, efficient solution to the problem.
For that reason, though, it's just not going to fly in Britain. This Scandinavian system relies on self-declaration of goods, with intelligent and targeted spot checks to deter evasion.
That just doesn't fit with the British tradition of the last few decades, which is to treat _everyone_ as if they're hardworking enough to manage to be a people-smuggler, drugs smuggler, terrorist and illegal immigrant all at the same time.
This system is also focused on goods, not people. And it's the movement of people which is the great trumpeting main theme of the Brexit bullshit. I can imagine the UK government turning a blind eye to smuggling of goods into the (Scottish part of the) EU - how else is trade going to happen? But an open border, which smelly _people_ can just walk across - no way! Paul Dacre's head would explode with fury.
Which is actually a major plus point for this kind of border.