Anti Thief For Nano Note

[Alexander Stephen Thomas Ross]

The speaker is really loud. By my guess I can here it from 20M away.
What needs to be done to make a nano note useless to a thief or at least
someone how wants to access ones calender and settings for example?

*Start-up log-in screen
*Time out lock.
*Global short-cut key combo to lock.
*Boot loader pass.
*File System Encryption? Can the even NN cope with FS encryption? Is it 
even worth it? :/

What else?

I have some fun sounds and video for this ;).