Digital Rights Management.
Publishers and Digital copyright holders can control access to certain media or software through such a system. It limits the sharing of songs or software like Windows and is designed to protect profits against “unauthorized use”.
If this still doesn’t make sense, check out the DRM chair. Created by a Swiss art and design team. The joints of the chair are made of wax and rigged in such a way as to ignite and melt away after it has been sat on 8 times.
DRM for digital content like music, movies and software is very commonly used (iTunes, Microsoft) but continues to be a source of controversy. Many contend that it inconveniences legitimate customers, stifles innovation and conflict with our traditional understanding of private property rights, by restricting owners’ activities.
I don’t think the DRM chair is going to sell many units either.