An on-screen license agreement that is accepted by the user by clicking a button. Almost all software today uses the clickwrap method, which displays the End User License Agreement (EULA) as one of the first screens of the installation program. The installation can be continued if the user clicks "I Agree," "I Accept" or something similar; otherwise the application cannot be installed.

The term was coined as a replacement for "shrinkwrap." Before obtaining software online became commonplace, a written agreement was included inside or printed on the outside of the box the software came in. It stipulated that opening the box (removing the shrinkwrap) or opening a separate shrinkwrapped set of disks was explicit acceptance of the agreement. See EULA.