My question is about these sports books that have no KYC requirements but might offer say a matched deposit bonus. What stops someone from signing up, using that bonus and then signing up another new account using a VPN and getting the bonus again? Thankyou
Usually there's a quota to qualify for the bonus.
A person might need to complete 10-20 bets before they can qualify. Or they might need to fulfill a minimum account balance or some other requirement. Those are the methods I've seen books utilize to keep things in check. It is also known that some books will refuse to honor their bonus if they feel something shady is going down. Some books do not honor their bonus period. Sometimes its good to check reviews of books or find some feedback before committing.
I hope that answers your question.