The nosiest b*stards are in the West
I travel / cross borders frequently and in my experience the US is by far the worst, followed by the UK and Canada. I don't go to Australia.
Once you have had equipment 'borrowed' by the USA, they will annotate your ICE/Customs profile and being stopped will likely increase. The UK are a little better, at least they treat you with civility but just as pushy in seeking access. I have been given the usual "Password or 4 years" routine.
I explain it's kind of hard to use a password when there is no hard drive and it's like a car without an engine.
Canada Customs simply calls an RCMP tech who quickly copies the hard drive contents.
Smart-phones are treated similarly, they plug their little device into the unit and suck the contents - in the same countries.
In China and VietNam never a problem - they hardly even check baggage.
I wonder what the GCHQ wll do if Silent Circle proves they are eunuchs?