We’re used to the fact that data storage technologies, once so sensationally expensive, are becoming drastically cheaper. What we don’t yet clearly realize is what that will mean for our everyday lives. Within ten years, it will be reasonably cheap to track every moment of your life. The technology already exists. You could each have a hovering Eye over your right shoulder, keeping an archive of all of your conversations and experiences. If you have an argument with your spouse in 2020, and disagree about something he said, you could simply ask the Eye to track back to that conversation and prove you right. Or wrong.
I sense an impending rise in divorce.
Drones are, as of January 2012, legal in US airspace, and are publicly available for sale. They will only get smaller, more powerful and more ubiquitous.