The S Pen is a very important feature of the Samsung Galaxy Note 3, and unfortunately due to the pens size it can be easily misplaced.
Thankfully, there is a way to ensure you never lose your trusty pen again. To set off an audio alert every-time you move away from the device without the S Pen being in it's hole please follow the instructions below:
1. Go To Settings.
2. Select Controls.
3. Go On S Pen And Tick S Pen Keeper.