Integration of VKontakte with WordPress. How?

Question

In contact with

Good afternoon. I dug through a ton of material today, but I didn’t find anything sensible. The bottom line is, how to fasten registration / authorization on a WordPress site through ONLY VKontakte?
Do not need the rest of the social. networks :)
Plugins like Ulogin, Loginza and the like tried, not much.
Has anyone implemented this without plugins?
I would be very grateful for advice

Answer 1

Why is Ulogin wrong? Cut off the standard registration, leave only VK in Ulogin and use it.

Answer 2

did not try to refer to the official documentation? They have widgets for websites. https://vk.com/dev/login