I remember Gulenko saying that sensors are better suited for visual identification methods since they are more apt to pick up on subtle visual cues. I think VI typing belongs in the same category of "body language analysis" that is used law enforcement interrogations.
https://www.refinery29.com/en-us/wha...anguage-expert
Body language experts are common and accepted in other fields, but VI in socionics is still challenged by some. With both I think its more an art than a science, funnily enough the article I linked says something similar about body language reading.