In order to help you get through setup quicker, a QR code is provided to let the eufy Security app know the setup code of your device.The Setup Code is locsted on the top or buttom of the device or on the back of thr provided documentation box
 

Usage
Each QR code is unique as the identification of each device. It’s often used to quickly set up devices and technical support by the eufy team.

Safety
There will be no damage to your local data because only the same eufy account and setup code can unlock the storage data.