> Tell the authorities that you "fill your hardisk up with random data before traveling in case of theft."
Better yet, tell them your laptop broke while in the airport before boarding the plane, and you are going to buy a new harddisk/get it serviced when you arrive at your final destination. Much more plausible.
> tell them your laptop broke while in the airport before boarding the plane, and you are going to buy a new harddisk/get it serviced when you arrive at your final destination
It's a felony to make false or deliberately misleading statements to U.S. border agents. Unless your laptop actually broke while in the airport, performing the scheme you described is a felony.
And as in the original "scheme" -- this is a question of technicalities and (perhaps only if you're a US citizen, perhaps not), whether or not the authorities in question are willing to take it to trial and prove that you "lied".
If you removed a key header which is crucial to the operation of your device in the airport, then the question is whether you can legally say, "my laptop broke in the airport," even if it was you who deliberately broke it.
This also covers the case of the question, "Does this device contain personal data?" To which you can truthfully answer, "Yes."
The point, in my original scenario also is not to lie, but to simply avoid being able to provide access under duress.
Sure, just as the scheme described in the post I was replying to. In both cases it's assumed that the lie is undetectable, by virtue of properly encrypted data being indistinguishable from random noise, and of the scheme not being shared with anyone else nor written down.
Better yet, tell them your laptop broke while in the airport before boarding the plane, and you are going to buy a new harddisk/get it serviced when you arrive at your final destination. Much more plausible.