What technology enables writers, musicians, artists, and other copyrighted content creators to control access to their work so that it is not stolen or copied illegally?

Thanks to technology, digital rights management (DRM) prevents copyrighted content created by artists and others from being stolen. Musicians, programmers, movie makers, writers, and others spend a lot of time and money creating their work. They can employ technology to limit the number of people who have access to content or to restrict sharing, printing, saving, etc. in order to prevent others from stealing it. Some DRM software can even display watermarks when someone tries to print a document or image that they do not have the right to print, or restrict access to information depending on IP address.