If, for example, you enter your credit card number into a web form to buy something, it will calculate what the 16th digit should be, using the first 15 digits and the special calculation (there are 16 digits in a credit card number). The last digit in each of these numbers is a check digit, which is obtained by doing a special calculation on all the other digits in the number. These are all examples of situations that error control coding can help prevent.īarcode numbers, credit card numbers, bank account numbers, ISBNs, national health and social security numbers, shipping labels (serial shipping container codes, or SSCC) and tax numbers all have error control coding in them to help reduce the chance of errors. Sometimes, the scanner won’t even read the barcode at all, and the checkout operator has to manually enter the number into the computer – but if they don't enter it exactly as it is on the barcode you could end up being charged for the wrong product. Or if you went to the shop to buy a can of drink and the scanner read it as being a more expensive product. All Rights Reserved.You probably wouldn’t be very happy if you bought a book online by entering the ISBN, and the wrong book was sent to you, or if a few days after you ordered it, you got an email saying that the credit card number you entered was not yours, but was instead one that was one digit different and another credit card holder had complained about a false charge. NHL and NHL team marks are the property of the NHL and its teams. NHL and the NHL Shield are registered trademarks and NHL.TV is a trademark of the National Hockey League. Each billing period, we will generally apply amounts you pay that exceed the Minimum Payment Due to balances with higher APRs before balances with lower APRs as of the date we credit your payment. We will apply payments at our discretion, including in a manner most favorable or convenient for us. Balance transfer fee: x% Intro fee on balances transferred by and up to x% fee for future balance transfers will apply. Cash advance fee: Either $10 or 5% of the amount of each cash advance, whichever is greater. Minimum interest charge: If you are charged interest, the charge will be no less than $.50. Variable APRs will vary with the market based on the Prime Rate. Intro Balance Transfer APR is x% for x months from date of first transfer, for transfers under this offer that post to your account by then the standard purchase APR applies.
Standard purchase APR: x% - x% variable, based on your creditworthiness. Intro purchase APR is x% for x months from date of account opening then the standard purchase APR applies.
Standard purchase APR: x% variable to x% variable, based on your creditworthiness. Secured Credit Card: Discover it ® Secured Student Credit Cards: Discover it Student ® Cash Back, Student Chrome Card Cash Back Credit Cards: Discover it ® Cash Back, Gas & Restaurant Card, NHL ® Discover it ®
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