There are two code types that you can use with the Boomerang List Builder, the Fixed code and the unique code.

The fixed code means that the one code will be used to unlock your product, this can be any number you wish, the software can also generate a random number for you to use - just make sure you don't forget it!

The unique code shows a different unlock code to each person that unlocks your product. To use the unique code you must upload a small PHP script. (See uniqie code section for full details). The unique code can be any length you wish, but the length you enter in the software must match up with the length you set in your PHP script.