Probably he doesn't have a scanner. Just a digi camera.

The guy's headband does look like the first (second?) hokage. Could be related. Maybe. Or it's just some distant cousin.

Seems to me, either he's always been here. Or maybe there's some small ninja clans/families around, where the Leaf's are like the governments, and there's some smaller factions, like the Hyuuga's and Sasuke's families. (Have their own small towns, not necessarily connecting to the Leaf Village).

Like where did Sai trained?