This application can be used to automatically sell pin numbers, phone numbers or software license key codes with PayPal. After a successful purchase the customer receives the license code by email, the purchased code is removed from the database so that the next purchaser will receive the next key code, all without intervention by yourself. The license codes are entered into one of the admin displays and all sales are recorded within the database. Checks are made on the transactions to prevent fraud and spoofing. Admin displays have the facility to email all customers or email those who have purchased a particular product. * Simple to install PHP / MySQL system