The reason for needing your SSN really is because it's federal law and helps protect against fraudsters. Since you're a great person, you shouldn't worry about a thing! 😉 Also, you should know that your data is verified through a secure third party digital authenticator so everything is fully encrypted and no human eyes actually see the information you submit!
That's the gist of it, but there's some info below that might be helpful if you need a bit more information about the law.
IMPORTANT INFORMATION ABOUT PROCEDURES FOR OPENING A NEW CARD ACCOUNT: To help the government fight the funding of terrorism and money laundering activities, federal law requires all financial institutions to obtain, verify, and record information that identifies each person who registers for an Inspired Card. What this means for you: When you register for an Inspired Card, we will ask for your name, address, date of birth, and other information that will allow us to identify you. We may also ask to see a copy of your driver’s license or other identifying documents.
The Inspired Debit Mastercard® is issued by Central Bank of Kansas City, Member FDIC, pursuant to a license by Mastercard International Incorporated. Mastercard and the Mastercard Brand Mark are registered trademarks of Mastercard International Incorporated. Certain terms and conditions are associated with the approval, maintenance, and use of the Card. You should consult your Cardholder Agreement. If you have any questions regarding the Card or such terms and conditions, you can contact us toll-free at 1-800-205-9347. If live agents are unavailable, you will be able to receive most account information by following the automated prompts, or by logging into your account on the Inspired mobile app.