I am developing a website for our GTA Online Crew, basically a gaming community, my issue lies in verifying that they are the user they say they are when they register (For example if there username on social club is GTOFAN01, we want to ensure that person uses the same username on our site when they register).
As we want all website users to have the same names from social club (owned by Rockstar and I have no way to change anything on there end...) to our website to avoid confusion / posers / trolls etc.
I've had a few ideas but they all create a lot of manual work or I am not sure how to implement, but I have narrowed it down...
Let anyone register and then manually send them a confirmation code through social club to the account name they have said they are.
somehow find out who they are currently logged in as on social club, if this matches the name they supplied then let them in.
find someway to send a message to there social club message box
2 is by far the best, but I can figure out a way to achieve it... I cannot read cookies or session variables from another domain.
Any ideas?