> It seems like the clear workaround is to ask travelers if this is the case, and to ask for their passwords to any popular sites that provide this service. A c

> It seems like the clear workaround is to ask travelers if this is the case, and to ask for their passwords to any popular sites that provide this service. A clean laptop desktop is suspicious on its own. So someone wanting to hide something will simply create false 'clean' accounts they can provide access to, while keeping the stuff they want hidden, hidden. Meanwhile, innocent people are getting their security compromised and privacy violated. Even worse, the authorities could claim the sites they did provide passwords to are 'too clean' and thus they must be hiding something and hold them ... until they give up passwords to accounts that may not even exist? When I was in public school, the school blocked several popular sites from the school network. As an unintended result, it provided me a great education about DNS, forward and reverse proxy servers, VPNs, and related tech as I figured out the dozens of ways to work around the blocks. Think the same thing wouldn't happen here? All you're left with is catching only the stupidest criminals, violating the privacy of innocent people, more than likely finding a bunch of false positives of whatever you're looking for, and at the same time forcing the actual criminals to become smarter about their opsec (making it harder to catch them -- in general, not just at the border) and still not catching them.