Show MasterCard supports and endorses the use of MasterCard SecureCode, which is a free service designed to enhance your existing Show MasterCard account. It's a private security code which protects you against unauthorized use of your card when you shop online at participating merchants. The SecureCode acts just like a Personal Identification Number (PIN) at the ATM, all you do is enter your private SecureCode during checkout at participating online merchants when prompted by Show MasterCard. Once your identity is confirmed, your purchase is complete.
You can choose to sign up now for this added security, or when shopping at participating online merchants. Enrollment is quick, easy, and free. Once you have established your SecureCode, you can use it for future purchases. If you don't sign up now, you will be prompted to complete your SecureCode registration before completing an online transaction at a participating merchant.
Not all online merchants are utilizing this extra security measure, so you will not be prompted by all merchants to enter this number during checkout. Remember this number is only known by yourself, so don't share this number with anyone else and don't write this number on your credit card.