1. Press and hold the "tag-following" APP icon on the mobile phone desktop, click the "scan" that pops up automatically, and then scan the code.
2. Press and hold the "On-Call" APP icon, press and hold the "Sweep" service in the menu bar that pops up automatically with your finger, and drag it to the mobile phone desktop to create a service icon. When "application code and place code" need to be displayed when entering the venue, click "Sweep" on the desktop to scan the expansion code.