1. When the phone turns on NFC, you can drop down the main menu bar to find the NFC function and click Open, or you can find the NFC function to turn on in the settings.

2. Open the wallet APP, find the "Open Door"/"Door Card Key"/"Key" section (the brand of mobile phone is slightly different), then click the "+"at the lower right to enter the card reading, put the card to be bound into the NFC sensing area of the mobile phone, and operate as required.

3. After setting up, you can swipe your mobile phone to enter the library.