A credit card number is found on the back of the card next to the security code number. It is the number that comes before the three-digit security code number on Visa, MasterCard, Discover, JCB and Diners Club cards. For the American Express card, the main card number is located on the front of the card with the four-digit security number above it.Know More
The first few digits of a card number define the type of card. In a standard 16-digit credit card, the issuer of the card determines the first 15 digits. The last digit, also called the check digit, is computed mathematically on the basis of the other digits. The check digit is worked out to correct input errors when credit card numbers are being supplied manually. The protection makes it difficult for hackers or other persons to generate random card numbers accurately.
It is inadvisable to provide credit card numbers to individuals or parties over the telephone unless the card holder initiated the call. Even when calling legitimate merchants or issuers, it is not wise to give card numbers over cordless phones because these are exposed to eavesdropping. Cordless phone eavesdroppers may use overheard information to trick a card holder into a scam.Learn more about Credit & Lending
To obtain your credit score for free without entering a credit card number, visit Annualcreditreport.com, which is the only website authorized by the U.S. government to issue free annual reports, as of 2014. Other sites that offer free access to your credit report are Quizzle, Credit Karma and CreditSesame.Full Answer >
A CVV number on a credit or debit card is a three or four-digit number printed on the back of the card used to verify that the user has physical possession of the card when making purchases, according to CVV Number. These numbers are also called card security codes.Full Answer >
A credit card number is normally 16-digits long, although the actual length varies depending on the card company. The maximum length of any card is 19 digits, and companies follow a specific identification protocol for number length.Full Answer >
Mobile credit card readers scan the magnetic strip on the back of a credit card to obtain customer account information, as The Nest reports. This data then allows the reader to transmit a processing request to the customer's bank using an encrypted connection and charge the customer's account.Full Answer >