What information do you need to activate a MasterCard debit card?

To activate a MasterCard debit card, you typically need the card number, the expiration date, and the security code (CVV) found on the back of the card. You may also need to provide personal information such as your name, address, and Social Security number for verification. This process can often be completed online, via a mobile app, or by calling the customer service number provided with the card.