Abstract: A system and method for allowing users to download modified software applications for digital devices, such as mobile phones, computers, electronic devices and mobile devices capable of wireless communication by the provision by the user of an authentication code that is validated to determine that the user is permitted to download and use a modified software application for the digital device. The system authorizes the user to download and use a modified software application and provides advertisements, directly associated with the campaign's authentication code(s), to the modified software application as it runs on the digital device, where the modified software application has been modified to accept and display advertisements on the digital device. The invention further includes allocating credits to authentication codes and deducting credits based on a credit value assigned to each modified software application and/or digital product, such as a digital song.

Abstract: A system and method for allowing users to download modified software applications for digital devices, such as mobile phones, computers, electronic devices and mobile devices capable of wireless communication by the provision by the user of an authentication code that is validated to determine that the user is permitted to download and use a modified software application for the digital device. The system authorizes the user to download and use a modified software application and provides advertisements, directly associated with the campaign's authentication code(s), to the modified software application as it runs on the digital device, where the modified software application has been modified to accept and display advertisements on the digital device. The invention further includes allocating credits to authentication codes and deducting credits based on a credit value assigned to each modified software application and/or digital product, such as a digital song.