What is an 'authorized user' of credit card?

When you get a card you can request to have another user on your card, they will get there own card, but it will be under your credit card. (Example: my hubby has a credit card and I'm an authorized user, so I have a card with the same acct number.)

added note:- When adding an authorized user to your account, you are agreeing to any and all charges that person places on the account. If the authorized user chooses to abuse the account, such as making purchases beyond the amount that you are able to pay or by exceeding the limit of the card, the negative effects goes against the primary users credit. The authorized users credit is not affected at all and they are not responsible for payments. So be careful who you chose to add to your card.