VI is certainly not constant enough. Therefor not reliable as a compleet tool.

But i have been able to type people in one second based on VI and later on, i could check that it was right.
as example the sad eyebrows that give some SEE a suprised-look.

Ofcourse these are seldom occurances. But it's still pretty awesome that faces often indeed correlate to certain types.

The bad thing is, some people seem te be exceptions. So VI just won't work at all.
The good thing is, it's a really fast way to type someone.