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2. Authorization hold - Wikipedia

   en.wikipedia.org/wiki/Authorization_hold

   Authorization hold (also card authorization, preauthorization, or preauth) is a service offered by credit and debit card providers whereby the provider puts a hold of the amount approved by the cardholder, reducing the balance of available funds until the merchant clears the transaction (also called settlement), after the transaction is completed or aborted, or because the hold expires.

3. Address verification service - Wikipedia

   en.wikipedia.org/wiki/Address_verification_service

   An address verification service ( AVS) is a service provided by major credit card processors to enable merchants to authenticate ownership of a credit or debit card used by a customer. [ 1] AVS is done as part of the merchant's request for authorization in a non-face-to-face credit card transaction. The credit card company or issuing bank ...

4. 3-D Secure - Wikipedia

   en.wikipedia.org/wiki/3-D_Secure

   3-D Secure. 3-D Secure is a protocol designed to be an additional security layer for online credit and debit card transactions. The name refers to the "three domains" which interact using the protocol: the merchant/acquirer domain, the issuer domain, and the interoperability domain. [ 1]

5. Credit card information: The basics you need to know - AOL

   www.aol.com/finance/credit-card-information...

   A Card Verification Value (CVV), also called a security code, is the three-digit number located on the back of your credit card near the signature box, typically under the magnetic strip. If you ...

6. Employment authorization document - Wikipedia

   en.wikipedia.org/wiki/Employment_authorization...

   Currently the Form I-766 Employment Authorization Document is issued in the form of a standard credit card-size plastic card enhanced with multiple security features. The card contains some basic information about the immigrant: name, birth date, sex, immigrant category, country of birth, photo, immigrant registration number (also called "A ...

7. Get help with your AOL billing questions - AOL Help

   help.aol.com/articles/account-management...

   We have a billing verification process in place when a new charge occurs. As part of the process, we bill a temporary $1 authorization charge to the credit card submitted. This is used only to verify the validity of the credit card and because you must be at least 18 years of age to purchase an AOL service.