credit-card

I've been working on Android (v2.3) for a couple of weeks now, and I've stumbled upon some problems with the Unimag Card Swiper from IDTECH . The unit comes with a scarce documentation and the demo app from the SDK implements the firmware update and a few classes for dialogs and such which really offuscate how to achieve basic functionality (added to the few and not so good comments in the code). I have implemented the interface in a basic activity and tried to detect when the unit is connected or disconnected but it seems the listener catches both events (connection/disconnection) as

I'm trying to develop an application, which would give access to different services for people from different regions of the world. Let's say, someone enters card number 1111-1111-1111-1111 . How do I use it to tell the country of origin? I know that this is possible, because paypal and apple do it. At first, I questioned whether this information could be gleened from the credit card number alone. Then I found it here: http://en.wikipedia.org/wiki/List_of_Bank_Identification_Numbers Edit - Don't forget about PCI Compliance if you are taking credit card numbers for payment. Edit - Apparently

This question already has an answer here: How do you detect Credit card type based on number? 26 answers i have an array of card types that looks something like this var cards = new Array(); cards [0] = {name: "VISA", length: "13,16", prefixes: "4", checkdigit: true}; cards [1] = {name: "VISA_DELTA/ELECTRON", length: "16", prefixes: "417500,4917,4913", checkdigit: true}; however id like to be able to find the card type depending on the card number entered. e.g if they select their card type from a drop down list i.e visa, then the credit card number should start with 4 otherwise when they

Does anyone know how to parse a credit card string input from a Magnetic Card Swiper? I tried a JavaScript parser but never got it to work. This is what the input looks like. %BNNNNNNNNNNNNNNNN^DOE/JOHN ^1210201901000101000100061000000?;NNNNNNNNNNNNNNNN=12102019010106111001? The N's are the credit card number. See the Magnetic Stripe Card entry @ Wikipedia : Track one, Format B: Start sentinel — one character (generally '%') Format code="B" — one character (alpha only) Primary account number (PAN) — up to 19 characters. Usually, but not always, matches the credit card number printed on the

The actual app is actually a web app but since my first impression is that there is no way to do this with a normal (android) web browser right now, I figured this might be possible with a WebView. Are there card reader attachments out there that have APIs/SDKs for android? We have found a viable solution. MagTek offers a device that is similar with the one being used by SquareUp. The device is slightly larger and heavier but they offer SDKs for Android, iOS and Windows Phones. The android SDK can be found and downloaded here: http://www.magtek.com/support/software/programming_tools/ look for

I am at the last step to finalize my program, however whenever I enter my integer (long) I get a input mismatch: Compiler message: "Exception in thread "main" java.util.InputMismatchException: For input string: "4388576018402626" at java.util.Scanner.nextInt(Scanner.java:2097) at java.util.Scanner.nextInt(Scanner.java:2050) at CreditCardValidation.main(CreditCardValidation.java:12)" My code is as follows: import java.util.Scanner ; //import Scanner public class CreditCardValidation { public static void main (String[] args){ Scanner kbd = new Scanner(System.in) ; System.out.println("Please