Ok so this is really annoying. Time usage does not stop until the device is completely powered off. Ugh! Time usage should stop when the users either puts the device to sleep or locks the screen. This goes for both Windows and Android.
When a user presses the power button on their Android device it turns off the display or when the display times out on its own. NF should stop time usage.
When a users Windows device goes into either standby or sleep or when the user locks the screen or the screen savers kicks in. NF should stop time usage.
I am find my self reminding everyone to power off their devices so as not to use up their allotted time each day.
Again, annoying.