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Screen sharing in a Zoom meeting
Participants in Zoom Rooms can use one-click direct sharing from a Zoom Desktop Client (macOS or Windows). Ultrasonic sound proximity detection enables the Zoom Room controller to generate an ultrasonic signal that can be detected by the Zoom Desktop Client.
- If the Zoom Desktop Client detects the signal in a Zoom Room, it automatically connects to the Zoom Room when the attendee clicks Share Screen.
- If proximity detection is not available, participants can activate direct sharing by entering a Sharing Key, which consists of a string of letters in the upper right hand corner.

Note:
Direct sharing with proximity detection uses the microphone you have selected in the Audio Settings of the Zoom desktop client to detect the Zoom Room controller. There are many factors that determine if proximity detection will function, including the quality of the controller's speaker and the laptop's microphone.