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2. Luhn algorithm - Wikipedia

   en.wikipedia.org/wiki/Luhn_algorithm

   The Luhn algorithm or Luhn formula, also known as the " modulus 10" or "mod 10" algorithm, named after its creator, IBM scientist Hans Peter Luhn, is a simple check digit formula used to validate a variety of identification numbers. It is described in US patent 2950048A, granted on 23 August 1960. [1]

3. Zazzle - Wikipedia

   en.wikipedia.org/wiki/Zazzle

   Zazzle is an American online marketplace that allows designers and customers to create their own products with independent manufacturers (clothing, posters, etc.), as well as use images from participating companies. Zazzle has partnered with many brands to amass a collection of digital images from companies like Disney, Warner Brothers and NCAA ...

4. Controlled payment number - Wikipedia

   en.wikipedia.org/wiki/Controlled_payment_number

   Controlled payment number. A controlled payment number, disposable credit card or virtual credit card is an alias for a credit card number, with a limited number of transactions, and an expiration date between two and twelve months from the issue date. This "alias" number is indistinguishable from an ordinary credit card number, and the user's ...

5. What Is a Credit Card Security Code and Why Is It ... - AOL

   www.aol.com/credit-card-security-code-why...

   The three- or four-digit code on credit and debit cards can be either a card security code or a card verification value. A three-digit CVV is located on the back of Mastercard®, VISA® and ...

6. AOL Mail

   mail.aol.com

   You can find instant answers on our AOL Mail help page. Should you need additional assistance we have experts available around the clock at 800-730-2563.

7. Forced free trial - Wikipedia

   en.wikipedia.org/wiki/Forced_Free_Trial

   A forced free trial is a direct-marketing technique, usually for goods sold by regular subscription, in which potential buyers are sent a number of free samples of a product, usually periodic publications. Quite often publishers distribute free copies and the reader is not even asked to subscribe. His address appears on a piece of paper that ...

8. Add or disable 2-step verification for extra security - AOL Help

   help.aol.com/articles/2-step-verification...

   1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more. Add or disable 2-step verification for extra security. Add an extra security step to sign into your account with 2-step verification. Find out how to turn on 2-step verification and receive a verification code, and ...

9. Why am I asked to verify my account after signing in?

   help.aol.com/articles/why-am-i-asked-to-verify...

   You may be prompted to get a verification code at your recovery phone number or recovery email address for any of the following reasons: