How do you become a digital nomad?

I've heard of individuals successful at becoming digital nomads, like Mr. Four-hour-work-week! He was my inspiration! But honestly, how is it possible if you're a little too remote? What about concerns regarding your expensive tech equipment, iphones, laptops, and such to stay connected and work remotely? How do you ensure they wouldn't get jacked on the trip? Ahh, I think I should start saving my crucial files to Google.