credit-card

There is no documentation for card.io that I can find other than source comments. The CardIOCreditCardInfo.h file has an enum for CardIOCreditCardType. typedef NS_ENUM(NSInteger, CardIOCreditCardType) { /// Deprecated. /// @see CardIOCreditCardTypeUnrecognized, CardIOCreditCardTypeAmbiguous CardIOCreditCardTypeUnknown __attribute__((deprecated("Use CardIOCreditCardTypeUnrecognized or CardIOCreditCardTypeAmbiguous instead."))) = 0, /// The card number does not correspond to any recognizable card type. CardIOCreditCardTypeUnrecognized = 0, /// The card number corresponds to multiple card types

The validations I know of are: Checksum the whole card number should add up to zero. (range is 0-9) Check the first digit(s) against the card type Check the length against the card type Check the CCV length against the card type (I think all the major types are 3 anyway) Of course make sure it is accepted card type as well as non expired. Are there any other validations :) (I expect many folks did not know about all of these) The reason I ask is because I overheard there was one to checksum number against expiration or CCV.. I just wanted to check. Card Number (aka PAN , Primary Account Number

Often I have stored credit card numbers in varchar(16) . That works, but it takes 17 bytes per number. Storage is not that big a deal, but I like to be efficient, for both storage requirement, and table search time. If I could use decimal(16) unsigned , I could cut the storage requirement to 7 or 8 bytes, and still preserve readability as well as much of the compatibility. This would strip leading zeros. Can I depend on all credit card numbers starting with a non-zero number? According to Wikipedia , the first digit can indeed be 0: The first digit of a credit card number is the Major Industry

I have a credit card number input form that will be used by both mobile and non-mobile browsers. I want to hint that a keypad should appear on mobile, and to allow (optional) spaces, so either "4111 1234 1234 1234" or "4111123412341234" should be accepted. From what I've found, the options are: a) <input type="tel"/> - this seems to behave as I want (with current mobile browsers at least), but it's semantically wrong. b) <input type="text" pattern="[\d ]*"/> or similar - the iPhone recognises some patterns ( [0-9]* , \d* ) as working with the keyboard, but this doesn't work as well on Android.

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 employee can see what was ordered. Here are my following solutions: OPTION 1) web based application Use FLASH, ASP.net, or JAVA for user interface? If I take this route, how can I communicate with the credit/debit card reader? The reader will be installed on the kiosk, but the kiosk software will be on the web. Would I have to create a secure