As border enforcement as using increasingly invasive tactics, a traveler that has any privacy concerns for the data that they are carrying (especially if visiting the United States) will very likely take steps to protect themselves.
Examples:
FindLaw:
The Ninth Circuit, in a decision announced this summer, has approved forensic searches of laptop computers at the border, even [...]
March 19, 2008 – 10:35 am
Facebook has a worthwhile privacy improvement today. It’s nice to see social networks giving some configurability of granular access to the information that users make available there.
One thing that is not obvious is how to block limited users from information that you would rather not share for whatever reason. The “Limited Profile” blocking is non-intuitive, [...]