UserAccounts
This is an incomplete design for how user accounts should be presented in Ubuntu.
Settings
System Settings should contain a “User Accounts” panel.
Account and group list
Configuring the guest account
“Name & Picture”
“Security”
If your own account is selected, the heading for the first column in the “Security” tab should be “To identify me, I can use any of:”, and for the second column “To authenticate me, require all of:”. Otherwise, the headings should be “This account can identify with any of:” and “Authenticating requires all of:” respectively.
The various options for identification and authentication may be implemented in any order. When they are implemented, they should appear only when hardware is present that can use them.
Options may be insensitive, in checked or unchecked state, as defined by an administrator. In addition, whenever an identification option is checked, the equivalent authentication option should be unchecked and insensitive, and vice versa, because you can’t use the same option for both.
If an option is currently unregistered (for example, if you have not registered your fingerprints), checking either checkbox for that option should act as if you also clicked the relevant “Register” button.
Fingerprint authentication
For comparison: Fingerprint GUI, Fingerprint authentication in Fedora, Microsoft Fingerprint Reader, Lenovo ThinkVantage
Choosing “Register Fingerprints…” should open a “Register Fingerprints” dialog… TBD
Smart card authentication
“Access”
In the “Access” tab, the “Account type:” menu should contain items for “Standard” and “Administrator”. Whenever the selected account’s access privileges do not match either of those two types, the menu should also contain a “Custom” item that is selected.
The “This account:” list should contain checkbox items for all the configurable privileges.
Whenever “Has mandatory Launcher items” is checked, the “Choose…” button at its trailing end should be sensitive. Choosing it should open a dialog containing a desktop, including a non-auto-hide Launcher containing only the current mandatory items.
“Launching” an application inside this dialog should not actually launch it, but should add it to the Launcher as a mandatory item. Each configurable Launcher item should have a Delete button overlaid in its top right corner as a badge, with accessible label “Remove From Mandatory Items”. Choosing “Revert” should return the Launcher to the state when the dialog was opened, without closing the dialog. “Change” should be sensitive only when the current state is different from when the dialog was opened.
Back in the “This account:” list, whenever “Has mandatory Launcher items” is unchecked, the indented “Can add other Launcher items” item should be both insensitive and checked.
“Open at Login”
See https://live.gnome.org/Design/SystemSettings/Proposals/LoginItems