I’m confused - How do we know this is him - this seems dumb.
You have to accept that the Guardian wouldn't participate in an interview with an imposter.
Snowden will already have had experience in identification protocols. You can be sure he has established a process for the Guardian to confirm his identity.
Personally, I trust a British newspaper more than ANY DOMESTIC MSM outlet.
If you want to know the truth, British journalists are more reliable.
Ambrose Evans-Pritchards of the Telegraph told more truths about the Clinton crime family than you will ever find from domestic MSM.