Edward Snowden's journey around the world has taken him from Hawaii to Hong Kong, and now to Moscow.

The 30-year-old former NSA contractor, who leaked highly classified information about the U.S. government's surveillance programs, left Hong Kong on Sunday on a flight headed to Moscow.

On Tuesday, Russia's President Vladimir V. Putin confirmed that Snowden was in a transit area at Moscow's Sheremetyevo Airport and had not broken any Russian laws. Putin's press conference was held hours after Russia's foreign minister, Sergey Lavrov, said Snowden had not crossed the border into Russia.

Snowden reportedly booked a flight from Moscow to Havana on Monday. He didn't show up for the flight. Another Havana-bound flight took off from Moscow on Tuesday, without Snowden aboard.

Snowden's no ordinary traveler. But his globe-hopping around the world made us think: Would it be possible for someone without his connections—in our increasingly connected age—to travel undetected?

Turns out, the answer is probably not.

"Snowden could do this because he had a lot of help," said Norie Quintos, executive editor of National Geographic Traveler. "I think for a typical traveler, it would be very hard to do."

It's a felony to use false identification, so you don't want to go that route. Instead, it's better if you just make it really, really hard for people to track you down, said Frank M. Ahearn, author of How to Disappear: Erase Your Digital Footprint, Leave False Trails, and Vanish without a Trace.

Ahearn spent over 20 years working as an investigator tracking down people who don't want to be found. He then realized he could make more money helping people who wanted to disappear—actually leave without a trace.

But it's much harder said than done. So we asked Ahearn, who currently splits his time between New York and California, about the best ways to disappear—Snowden-style or otherwise.

So I'm a 28-year-old writer living in Washington, D.C. I want to get out of here—maybe start something new. What's my best bet?

How much money do you got?

Let's say it's unlimited. (Writer's note: It's not.)

If you have unlimited money, then the world is your oyster. You probably want to head to Eastern Europe because of the language barrier. But it really depends on who is looking for you. You could cross into Mexico and once you cross, you're home free. There are small towns in Central and South America that are off the grid. It really depends on how crafty you are and what limits you have. It's a very different type of living that exists in those places.

I've heard of Mexico and South America, but why Eastern Europe?

It's much harder to find a person in Croatia or the Ukraine because their infrastructure is a whole lot different than ours. You don't need any kind of identification or numbers linking you to accounts like electricity, for example. And if the person looking for you has to start in the Ukraine, they just wouldn't know where to start.

What if I didn't have unlimited money?

Then you want to live more off the grid. You could go to Vegas, work off the books as a waitress, use prepaid cell phones. Being a woman, it would be easier to hook up with some guy and have everything in his name. It's not the most fun way of living, but it's doable. You could also probably couch surf and float city to city with no problem.

So if I stayed on the down-low and shifted from city to city, I'd be okay?

Well, most people get busted for something else. They contact someone from their past. When we're looking for someone, we're looking for the information they left behind: a call to a grandmother or a call to a sister. You kind of have to leave that world behind. The most important thing is making money to survive.

What about all of the social media I use? I'm on Twitter and Facebook, and I use that to stay in touch with basically everyone in my life. Would I have to leave those?

Deleting social media actually serves no purpose. But what you can do is create disinformation. People don't realize this, but they actually search for things that can be used to find them from their home computers. So what you want to do is, say, plan to go to Las Vegas. But in the meantime, Photoshop some pictures of you in Wisconsin. Call Wisconsin from your home phone for jobs. Post lots of things on Facebook about Wisconsin. This is all for the person that's looking for you—you want to keep them busy and have them think you're in Wisconsin.

But I'm not in Wisconsin.

Yes, but there's no reason you can't create a series of fake online identities based in Wisconsin and friend them on Facebook. And then they can talk about having lunch with you in Wisconsin. You create this whole world of friends who are confirming your life in Wisconsin.

This kind of makes me want to move to Wisconsin. It seems like I would have a lot of friends there.

Yes, but they wouldn't be real.

What about a new identity? Why can't I just get some papers and become someone else entirely?

New identities don't work. Back in the day, you could get a birth certificate without any kind of problem because Social Security didn't cross-reference with the death record index. But [Social Security has] gotten much better.

So what you're telling me is the best way to disappear is really just to lie and fall off the grid, without trying to draw much attention to myself?