The desktop that you use in Trusted Extensions is protected. Labels provide a visible indication of protection. Applications, data, and your communications are labeled. The desktop is a trusted version of the Oracle Solaris desktop.
The login screen is not labeled. The login process requires you to establish a label for your session. Once you have chosen a label, the desktop, its windows, and all applications are labeled. In addition, applications that affect security are visibly protected by a trusted path indicator.