Do you use your debit card to shop online?  If you do, then you may have been asked by some online retailers what your MasterCard SecureCode is. Don't have a MasterCard SecureCode? Go to https://secure.shazam.net/securecode to sign up. This free service helps protect your MasterCard card against unauthorized Internet transactions. It's easy to sign up and could end up protecting you against identity theft.

Once you've registered and created a SecureCode, each time you make an online purchase,a window will pop up asking for your SecureCode, just like using a PIN at the ATM. When you correctly enter your SecureCode, your card issuer confirms that you are the authorized cardholder and your purchase is completed. No code, no confirmation, no purchase. Another way to help prevent anyone other than you from using your card.