Why do you need the last four digits of my social security number? Author October 15, 2019 18:51 Updated We may verify your social security number, to confirm: (a) that You are Legally of Age to gamble; and (b) Your identity. Related articles Issues creating an account What is the minimum age to open an account? How do I verify my account? Do I have to pay tax on my winnings? Deposit or withdrawal in person Comments 0 comments Please sign in to leave a comment.