What is DRM (Digital rights management)?

Digital rights management (DRM) technological protection measures (TPM) are a bunch of access control advances for limiting the utilization of exclusive hardware and copyrighted works. Digital rights management incorporates codes that forbid duplicating, or codes that limit the time or number of devices on which a specific product can be accessed. DRM permits to limit or prevent clients from altering or saving content and limits or prevents clients from sharing or sending content.