GitHub - dbachelder/CreditCardEntry: Smooth UI for Credit Card Entry on Android device, regex check for supported credit card types and luhn check. Inspired by Square credit card entry interface
![GitHub - issotina/CardForm: A ready-made pretty interactive card form that can be included in your Android app, making it easy to accept credit and debit cards. GitHub - issotina/CardForm: A ready-made pretty interactive card form that can be included in your Android app, making it easy to accept credit and debit cards.](https://raw.githubusercontent.com/geeckmc/CardForm/master/demo.gif)
GitHub - issotina/CardForm: A ready-made pretty interactive card form that can be included in your Android app, making it easy to accept credit and debit cards.
![Financial: credit card number validation) Credit card numbers follow certain patterns. A credit card number must have between 13 and 16 digits. It must start with for Visa cards for Master cards Financial: credit card number validation) Credit card numbers follow certain patterns. A credit card number must have between 13 and 16 digits. It must start with for Visa cards for Master cards](http://dev-ingestion-image-output.s3-website-us-east-1.amazonaws.com/9780134670942/Chapter-6/images/70942-6-6.31pe-question-digital_image_002.png)