G4 Pro Series
User Manual
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Copyright©2022 ZKTECO CO., LTD. All rights reserved.
The QR code can replace a physical card on a specific device to achieve contactless authentication to
open the door.
When using this function for the first time, the App will prompt to authorize the modification of
screen brightness settings, as shown in the figure:
The QR code is automatically refreshed for every 30s, and it also supports manual refresh.
NOTE:
For other specific operations, please refer to ZKBioSecurity Mobile App User Manual.