What Every Practice Needs to Know About Hiring an Associate
Jonathan R. Martin, Patrick D. Craig
Card Security Code
The card verification value is an important security feature for credit card transactions on the internet.
MasterCard, Visa and Discover credit cards have a 3 digit code printed on the back of the card while American Express cards have a 4 digit code printed on the front side of the card above the card number.
Visa, MasterCard & Discover
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