How can I use iButtons for software copyright protection?
When a copy of a software application is purchased, the company that developed the software sends an iButton (and a DS9490B USB iButton holder) with the software. For the end-user to invoke the application, an iButton must be present and supply the program with valid information in order for it to operate. This way, many copies of the program can be made, but only those invoked with valid iButtons will function. For more information, see the link below.
