Auto lock app after user inactivity when app in foreground

[cvarjao]

• After x amount of time of the app open, but receiving no user input, auto-lock the app.
• Configurable amount of idling time:
  • 1 min
  • 3 min
  • 5 min (default)
  • Never

Related Issue:

• Update PIN screen lockout #2073

[al-rosenthal]

@cvarjao Should this inactivity timer reset if the app goes into the background/ foreground? or should it maintain and update the timer according to how long it was in the background.

For example:

1. User interacts with the app, timer reset for 5 minutes
2. User doesn't interact with app and timer runs down to 3 minutes
3. User pushes app into the background for 2.5 minutes
4. App is brought back to foreground and the user doesn't interact for 30 seconds
5. 5 minute timer is hit and the user is logged out

[knguyenBC]

I think the timer should reset if thrown into the foreground but not the background.