How to track social media users networks visiting the site?

Question

Social media

vk and etc.
Preferably some kind of up-to-date methods.
So that the user does not enter the site through a social network account, at least in an open form.

Answer 1

VK Api
Parsing
No legal way .
You can try to parse the response from the likes widget of each network and find the user id there.

Answer 2

lidx.ru determine the user of the social network

Answer 3

Google Analytics + Yandex metric!
They provide a lot of opportunities!
and clicks and transitions, and from where I came in and from where I came in and much more)