Feature: turn off or show lock symbol on screen lock

[sjjh]

Idea: once the user locks their screen, turn off the display or replace it with a padlock or key symbol.
This feature could get more interesting once/if more personal information (e.g. notifications) are shown.
This feature should probably be configurable in the config file (turn on/off, maybe which symbol to display).

[MidnightJava]

Good idea. This and pretty much all your other suggestions fit nicely into the icon concept that Tim mentioned in the other issue, and which he's already done some good design and initial programming work.