Just to add that Hadrian’s Firewall used to exist/does exist, I think. It was located in BT’s main POP in Newcastle.

I think the issue there is the k-ID software asks you to do things like open your mouth, then close your mouth - so you’d need to find stock photos of the same person doing stuff like that. Which, now that I think about it, I imagine there will be an influx of selfies of people with closed and open mouths available on google images very soon.

I’m out of the loop I guess. What’s happening?