It is important that we are able to positively identify our customers to comply with both regulatory requirements and to help ensure the security of accounts. In order to achieve this we may request identification from our customers.

Online betting sites need more than just your name and date of birth to verify your identity. Providing an SSN gives more protection for the sportsbook and user. This also makes it so the Government can tax your gambling winnings. This doesn't apply to all users, as you need to meet a certain threshold.