two new user settings, one for enable/disable the lockscreen behaviour, another to regulate the modifier. Set LOCKSCREEN_AS_LOGOUT to 1 and the LOCKSCREEN_MODIFIER=3 and when the user locks their screen, for every 3 minutes, their actual daily_total goes up by 1. Basically slows down (set modifier to 0 for stopped completely) the time curb counter while the lockscreen is on.