Use this simple app to verify the validity of debit and credit card numbers.It used the Luhn algorithm to determine if the number is valid. It will also be able to identify most card types including: American Express Master Card Visa / Visa Electron Diners Club Discover Solo Dankort InterPaymnet (TM) etc. IMPORTANT: * The app does not store or transmit card numbers * The app will only verify the card number validity - not if the number is fake * Not all card types will be identified