Wait until they get more efficient at it. This kind of thing can be highly automated with software that only has to within a tuned degree of certainty determine who else needs additional screening. You can tune this precisely on how many humans you have around at a given time and can facilitate the "Enhanced search" of the devices.
Has anyone taken a steganographic approach to this? Just have a bunch of pictures of cats (or something more believable, like porn) in a partition, then you overlay sensitive data (encrypted). So you don't have a mysterious partition that is easily found. Obviously you can't store a ton of data that way though. You could even take the same approach with the program itself, hide it inside something else. (I imagine it would still be detectable by someone sophisticated enough, but might make it more difficult)
As a "stupid thought experiment" that's a fun thing to consider. (Somewhere I've got a proof-of-concept perl script that steganographically embeds PGP encrypted messages into an image of the FBI logo and posts them to Twitter. I would not ever actually use it in anger... I still have the private key for all my test/gag posts, just in case I ever need them...)
But if you're _actually_ crossing a border into a country where there's internet access, why would you risk carrying any data that you wouldn't put on a postcard across that border? If you need it, download it after you've got there.
Right but there will be just be a law that specifies anyone trying to purposely circumvent the search will be accused of a felony. Of course the vast majority will agree because of "safety" and "if you have nothing to hide...".
The next step here is to ask Google to have an API that, when plugged in and password is entered - just downloads and "verifies" your data for compliance. Bit by bit all the freedoms will be eroded.
The step after is an "express pass" that has you download software that constantly monitors your usage and uploads it to TSA and related. Helpful widgets and dashboards will be available to see at what level of compliance you're at and used like a credit rating for participating in society.
