Red Shark Short

This app needs a cheap optical office mouse to work. IR (infrared), gamer, laser mice won't work. I have good experience with 1600 DPI mice.
1. Start the app
2. Put your smartphone on the desk, screen upwards
3. Put your mouse on the phone
4. Check if the cursor is moving. If not, try to move your mouse a bit, or rotate. If doesn't work anyway, replace it.

For more details regarding the possible issues, best practices, etc., visit the following page:
https://seeal.eu