Is It Possible To Definitely Say A Baby Photo Belongs To A Specific Adult

Factual Questions
1

At least two women have claimed to be the “Smiling Sun” baby from the Teletubbies. However, the woman making the claim today seems better able to back up her claim. You can see photos here.

What with facial recognition software and all that, is it possible to definitively say that a baby photo is that of a specific adult?

2

It isn’t even possible to definitely say a photo taken of an adult yesterday belongs to a specific adult.

3

OK, then excluding “definitively,” is it possible to narrow it down to, say, 90% likelihood?

4

Aren’t certain features used for identification, like if the photo has a clear shot of the ears?