Matching Faces. Is it Possible?

Addressing himself to Charles Freeman, Dave Hines writes in a comment, “You inspired to make a video. I wanted you to see it. This happened because of our conversation on this blog site. thanks.”

https://www.youtube.com/watch?v=meyneXlWcLo&google_comment

You might want to check out, More on the ISA Tile and the “Prince of Peace”, a posting in this blog last April, and an article in Wikipedia, Facial recognition system. I keep hearing about points of congruence but have not seen any documentation or explanation as to why it is valid method. Anyone? And is it valid for different media?

Video is nicely done.