Top "Credit-card" questions

is used for questions related to payment cards.

Validating Credit Card Information - CVV Numbers

I am using authorize.net {aim} for my payment gateway. I am using test authorize for developer account. I have …

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Storing credit card information with PayPal's 'Website Payments Pro'?

I am developing an e-commerce website where some customers will be making frequent online purchases. With that said, I am …

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Is there free credit card api or payment gateway?

Actualy question says all, I need this only for testing. So, demo of some kind or 4-5 free transactions a …

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Best way to prevent duplicate use of credit cards

We have a system where we want to prevent the same credit card number being registered for two different accounts. …

hash cryptography credit-card
C: Credit Card Number checker/ Luhn's algorithm

Everything looks fine and seems to follow Luhn's algorithm, but when i enter my own credit card number or this …

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Should I use the CreditCardAttribute to validate credit card numbers?

Should I use Microsoft's CreditCardAttribute to validate credit card numbers like so? [Required, CreditCard] public string CreditCardNumber { get; set; } Or …

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Is there a correct way to mask a 15 digit credit card number?

15 digit bank card numbers are formatted 0000-000000-00000[1]. If I show the last 4 digits, it becomes xxxx-xxxxxx-x0000 which looks slightly …

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How to securely pass credit card information between pages in PHP

How do you securely pass credit card information between pages in PHP? I am building an ecommerce application and I …

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Capture credit card information from card reader into an uneditable text field

I'm newbie in terms of Javascript. Here's my problem: I wish to capture credit card information from a card reader …

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Somebody is storing credit card data - how are they doing it?

Storing credit card information securely and legally is very difficult and should not be attempted. I have no intention of …

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