Sell software key codes, pin numbers and licences online

This application can be used to automatically sell pin numbers or software key codes with PayPal and Google checkout. After a successful purchase the customer receives the key code by email, the purchased key code is removed from the database so that the next purchaser will receive the next key code, all without intervention by yourself. The key 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 faciity to email all customers or email those who have purchased a particular product. Simple to install PHP/mySQL system.