Mobile will never log out if tablet never sleeps

[adamdewey]

Describe the bug

If a user sets their tablet to never sleep then they will never be logged out of Mobile.

Could be a little security hole...

To reproduce

Steps to reproduce the behaviour:

1. Set tablet to never sleep
2. Open Mobile
3. Come back in 24/36/48 hours
4. Continue using Mobile

Expected behaviour

Mobile to log out after no user activity detected.

Proposed Solution

Leave if you don't know how to fix/implement. Edit this issue description and explain here if you know the best path of implementing the fix within the codebase.

Version and device info

• App version:
• Tablet model:
• OS version:

Additional context

Add any other context about the problem here.