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Questions tagged [credit-card]

is used for questions related to payment cards. Questions regarding security of payment card data may want to consider using the pci-dss tag.

This tag is used with questions related to payment cards.

If your question is regarding security of payment card data, then you may want to consider using the tag.

Note that much of the advice surrounding this topic is region dependent, so it will help if you mention where in the world you are.

FAQs for this tag:
Which payment gateway should I choose

Terminology associated with this tag:
Merchant
Payment Gateway / Service Provider
PCI-DSS

1191 questions
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IDTECH credit card reader data decrypting

I am trying to decrypted IDTECH credit card reader's encrypted data. This details has been encrypted using Triple DES with CBC cipher using DUKPT. Encrypted Swipe (coming from IDTECH credit card…
Tushar Trivedi
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Is there any payment gateway focusing India?

I was searching for a payment gateway for my application to integrate. MY application is much designed for India so i need to give debit and credit sale of payment process to the users. I made a try with PayPal Express Checkout but it supports only…
arnp
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3 answers

What's a good way to generate a random number for a valid credit card?

I am developing a set of tools in Java for validating and working with credit cards. So far I have support for: LUHN validation. Date validation (simple expiration). Card code length validation (CVV, CVC, CID) based on the brand (Visa, MasterCard,…
carlspring
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5 answers

Hosting a PCI compliant app on Azure

I want to host an application on Windows Azure that stores the credit card information of users who pay to buy subscriptions for a monthly fee. I'd just have to store the card data as securely as possible (encrypt, salt, update database password…
Mark13426
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6 answers

How to securely encrypt credit card information in a database

I have already read through Saving credit card information in MySQL database? and Storing Credit Card Information. I'm aware that storing credit card information requires PCI compliance, which is not an easy task. That is not what this question is…
user1112594
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1 answer

Can I use another person's credit card to register my Android Developer account?

I want to register for a developer account on Google but unfortunately, I don't have a credit card yet, nor will I get one any time soon. I'm thinking of borrowing one from friends or relatives and using it to pay the $25 fee and then I'd pay my…
Propeller
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Luhn or Verhoeff algorithm for credit card numbers

First of all, I'm not really sure if this should be on stackoverflow but I thought I would try to ask anyway. In the past I have always used the luhn algorithm for error checking in credit card numbers, but today I thought I would implement the…
Lucas
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2 answers

What options are available to accept credit card payments through an iPhone?

What are the options to accept a credit card payment from an iPhone application? This will be a stand alone application, not an iPhone specific web site. Can I integrate with a payment gateway like Authorize.net? What about paypal or Google…
Tai Squared
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How to save credit card data in a database?

I am working on an application in which it is required to store whole credit card numbers. Is this possible to do using any API? I have read about Authorize.net's Customer Payment Profile option, but it gives only last 4 digits when you try to…
Saurabh Rane
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Difference between order number, transaction id and invoice no

I'm implementing my first payment gateway, and while my situation might be simple in that I could make all three the same, but I'd like to know some situations where they should be different. So again, What is the difference between order number,…
Junior Superman
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5 answers

Why is data duplicated in EMV card?

I am working in EMV card and my new task is to compare Magstripe data with chip data. Data that should be common in Mag and chip is:- PAN, Card Holder Name, Expiry date. Here I don't understand the following:- A single data like PAN is present in…
Arjun
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6 answers

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 would like to have the users to go through the checkout like this: Enter Information -> Review -> Finalize Order Problem is that I am…
Alex
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Credit card system implementation?

My site is going to have a credit system that basically works a lot like a credit card. Each user has an unlimited credit limit, but at the end of each week, they have to pay it off. For example, a user might make several purchases between March 1st…
mpen
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Kiosk software guidance

I need to develop a kiosk system. The only payment option will be a credit card/debit card. The kiosk need to be networked with another PC. For example, if a customer orders something on the kiosk, it needs to be sent to a another pc where a store…
linux fanatic
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Credit Cards: Can AVS be checked before Authorization?

This is a question about credit card processing. We are using AVS and have found that each transaction that fails because of AVS causes a hold for the total amount to be placed on the customer's card. Multiple failures mean multiple holds. This…
NXT
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