Account verification: Only 1 account per person

Question

In my community, every user should only have one account.

So I need a solution to verify that the specific account is the only one the user owns

Answer 1

I think 1 account per email address should be good enough for your needs. After all, account verification doesn't have to end right after signup.

You can publish the IP address of the computer each message was posted from to help your users detect when someone is using multiple accounts from the same computer, and you can use a ranking system to discourage people from using temporary accounts.