I came across a discussion on another forum where they are discussing different ways to ask if you actually know a person.
'Do you know him personally?
Did you meet him in person?
Do you know him in person?'
There's a debate going on as to whether 'Do you know him in person?' is correct English. One person stated that 'in person' requires an active verb [action verb; EA]. I understand action and stative verbs to some extent but I do not quite understand this. Do you agree with this person?
https://forum.wordreference.com/threads/lo-conoces-en-persona.3238389/#post-16711884
Best Answer
This is tricky. All the dictionaries I've checked in license the action verb / punctive usage, and Macmillan could actually be considered to restrict the phrase by adding a punctive verb:
The CDO entry is not quite as prescriptive:
though I'd say we can assume the 'to do something' here too.
AHD muddies the waters by adding the synonym 'personally':
and of course 'personally' doesn't require a punctive verb: I know her personally. (stative) I'd consider this entry misleading.
Collins seems to give a tighter if not totally decisive definition, but adds a second sense (which, however, seems to require an action verb if not a punctive usage):
And ODO again seems inconclusive (but note that all examples given have been with action verbs):
Google searches show that expressions like 'know him in person' are far from rare, but these Google Ngrams show that 'know him personally' etc are by far the more popular variants. They'd be my choice.