You can purchase the application from the official web page. There are three options: Scan Only; Scan, Backup and One-Year of Updates and Scan, Backup and Two-Year of Updates. Select one of them, download the application and install it following the self-explained steps. After the installation process is complete, open the program and press the Register icon. You will be redirected to the official web page where you can register the software and purchase a serial number.