How do you verify ID?

[Nicole Heasley Beitenman]

We just hosted a wonderful tenant from Furnished Finder. She submitted her credit/background check and all payments via Keycheck. I never met her as the key was exchanged via lockbox. But it did occur to me that a totally different person could have been in my house than the one I approved. How do you verify that the person you issued a lease to is the person who actually moves in? Do you check ID somehow or just assume the risk since it's probably pretty minimal?