I have had my hands swabbed for explosives, in a few countries outside America.
I do think that the OP is confused about 'hard drive scanning' - as bumber points out, not easy to do. There are times when CBP and similar agencies MAY stop returning international travellers for secondary screening, and that may include doing a quick search of the hard drive, to see if the laptop may have been purchased overseas and not declared.
I travel with at least two laptops and two external harddrives, and this has happened to me once or twice. They simply open the explorer function and check file dates - not very accurate maybe, but a simple way to see if the laptop has most likely been in use for awhile (of couse, the physical state of my ruggedised laptops is also an indicator that they are well-used and well-worn!)
I have also been asked to show my watch by random plain clothes strangers in various airports; they are customs officers who are checking for travellers returning with undeclared watches or jewellry. This happens to me a few times a year in MUC and when they see my cheap Disneyland Paris watch they just move along very quickly.
I still honestly believe that this thread was started by a well-intentioned but misguided and confused traveller who didn't understand what she saw or heard, and may have miscontrued a sarcastic or untrue remark as truth. It is also clear from the link posted that the OP may not understand the different roles and responsibilities and areas of jurisdiction of the various types of officials within an airport.
I do think that the OP is confused about 'hard drive scanning' - as bumber points out, not easy to do. There are times when CBP and similar agencies MAY stop returning international travellers for secondary screening, and that may include doing a quick search of the hard drive, to see if the laptop may have been purchased overseas and not declared.
I travel with at least two laptops and two external harddrives, and this has happened to me once or twice. They simply open the explorer function and check file dates - not very accurate maybe, but a simple way to see if the laptop has most likely been in use for awhile (of couse, the physical state of my ruggedised laptops is also an indicator that they are well-used and well-worn!)
I have also been asked to show my watch by random plain clothes strangers in various airports; they are customs officers who are checking for travellers returning with undeclared watches or jewellry. This happens to me a few times a year in MUC and when they see my cheap Disneyland Paris watch they just move along very quickly.
I still honestly believe that this thread was started by a well-intentioned but misguided and confused traveller who didn't understand what she saw or heard, and may have miscontrued a sarcastic or untrue remark as truth. It is also clear from the link posted that the OP may not understand the different roles and responsibilities and areas of jurisdiction of the various types of officials within an airport.