
Back in the late 1960s, a popular public service announcement intoned: “It’s 10pm. Do you know where your children are?” Let’s rephrase that for today: “It’s 2012. Do you know where your data is?” My guess is that you don’t.
Thirty years ago, we geeks knew exactly where our data was: on floppies in Tyvek sleeves. Then we got multiuser systems at work, and shared hard drives with our coworkers. Next, networks put our files on central servers, a step further away from our direct control. In the 1990s came the Internet, which gave us access to a world of content, but which also gave the world a doorway--preferably a locked one--into our Macs.