Off the top of my head, I can't tell you many people hit up Facebook daily, but a freakishly high number of people visit the site on their phones everyday.
Despite ups and downs in the relationship, Madeleine Albright - then secretary of state - visited Pyongyang in 2000 and an arms control treaty was agreed.
Apple's stance on these issues emerged post-Snowden, when the company started putting in place a series of technologies that, by default, make use of encryption to limit access to people's data.
For the Princess, the trip to this war-torn country was an excellent opportunity to use her popularity to show the world how much destruction and suffering landmines can cause.