Mkxauth 1.7 - A utility for managing .Xauthority files.

The mkxauth utility helps create and maintain X authentication databases (.Xauthority files). Mkxauth is used to create an .Xauthority file or to merge keys from another local or remote .Xauthority file. .Xauthority files are used by the xauth user-oriented access control program, which grants or denies access to X servers based on the contents of the .Xauthority file.

The mkxauth package should be installed if you're going to use user-oriented access control to provide security for your X Window System (a good idea).