There are some common characteristics, but they're more vague than that. VI does work after you have experience, but you need to integrate mannerism and facial expressions into the general picture too. Just looking at the descriptions at socionics.com won't cut it, especially because what are considered to be characteristic traits of a given type are actually shared by many others, so what you are looking for would be the combination of them. This description is true of me:
and I can see it to be valid for the ENTjs I know, too. But I don't think that if I didn't know that they were ENTjs, I would have noticed the similarity. Because for example this would easily apply too:ENTjs often have full lips and a characteristic salesman like smile. Their bone structures normally give them their square shape figures. Their faces too are often square in shape and the facial structure itself often has many small details. Their eyes are constantly darting about rarely remaining on one object for any period of time. ENTjs typically tend to have a bouncing gait. The more hyperactive they are the more noticeable this becomes.
Although I know plenty of people that are not ESTps and wriggle and have free and flexible movements. In short: if somebody matches the description perfectly, then it's quite likely that his type is the one of the description. However, isolating single statements will not be effective.ESTps generally have either slim figures or firm and solid figures. Solid ESTps have free and flexible movements. When standing in one place they tend to wriggle rhythmically as if they have a slight electric current running through them.