credit-card

问题 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

问题 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. 回答1: 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

问题 i need to add an hyphen after every 4 digit i enter, i am getting this in the console , how can i can achieve this to change in the input in angular 2 Code i used given below .ts mychange(val){ var self = this; var chIbn = self.storeData.iban_no.split("-").join(""); if (chIbn.length > 0) { chIbn = chIbn.match(new RegExp('.{1,4}', 'g')).join("-"); } console.log(chIbn); self.storeData.iban_no = chIbn; } Html <input type="text" name="din" (ngModelChange)="mychange($event)" class="form-control" [

问题 I'd like to automatically charge my members a variable amount of money based on the services they use on my website. They would accumulate a balance owing, and then every week they would be charged for that amount. Is there a way I can do this without having to store their credit card information in my database? (Similar to my last question, but I just realized I don't really want to go through the headaches and liability issues of having to safely store CC info) 回答1: To accomplish this you

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 4 years ago . I want to allow my customer users to enter their credit card information so that I can charge them every month. I wonder how one should save this information? Should it be saved in the MySQL database ("user" table) or is this kind of information too sensitive and need to be stored

问题 I have a business requirement that forces me to store a customer's full credit card details (number, name, expiry date, CVV2) for a short period of time. Rationale: If a customer calls to order a product and their credit card is declined on the spot you are likely to lose the sale. If you take their details, thank them for the transaction and then find that the card is declined, you can phone them back and they are more likely to find another way of paying for the product. If the credit card

问题 I am newbie applets and i used from this link: working with Java Card Wallet for creating an Wallet project. I before could credit card amount by this command : 80 30 00 00 01 1A 00 . I now want add '5000' to the present amount. As you know 5000 in hex equals with '1388' that is 2 byte. So i must send 2 byte data 13 and 88 to the card. I create bellow command and sent it to card but i get '67 00 Wrong lenght' as response. 80 30 00 00 02 13 88 00 How can i credit or debit more than 1 byte to

问题 Hi i Need to know if any specific security design exists for saving credit card details of user for future use.Actually iam developing an application in android and its like an app market selling products and i want to implement this functionality ie payment through credit card. 回答1: DO NOT save user credit card data on a device! There's just no way to make it secure. A device can get lost or stolen. You'll have to implement a secure user login to your server and store the CC data there. 回答2:

问题 I am trying to implement Card.io in my app, I followed the instructions on Card.io website and when I get into my app and I launch it. When I click button I call CardIOActivity and I can't turn on my camera. I have this screen when I click button This is my manifest code: <uses-sdk android:minSdkVersion="8" /> <uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.permission.VIBRATE" /> <uses-feature android:name="android.hardware.camera" android

问题 I am evaluating some Payment Gateway options and am looking at PayPal's vault option (similar to Braintree's vault). What I found is that in the case of Braintree's vault storage, I can send credit card info securely (encrypted) to be stored on their servers, thus obviating the necessity of PCI compliancy issues. Does PayPal's vault storage API have a similar way of sending the encrypted credit card info? I am looking at their documentation and it seems as though I need to send un-encrypted