The shell will request a password when an encrypted device or a remote filesystem is mounted. If the password can be saved for future use a “Remember Password” checkbox will be present. This key sets the default state of the checkbox.
The shell will only show a Bluetooth menu item if a Bluetooth adapter is powered, or if there were devices set up associated with the default adapter. This will be reset if the default adapter is ever seen not to have devices associated to it.
Some systems support more than two power profiles. In order to still support toggling between two profiles, this key records the last selected non-default profile.