Curtain Mode is a Remote Management feature on macOS that blocks or conceals the display on the computer Screens is connected to. It's useful if you don't want the remote user to see what you're doing (e.g. entering a password or editing a sensitive system file).
This is what people in front of the remote Mac will see (the text is user-customizable):
Note: In macOS 13 Ventura, the display is completely blank and does not display any information.
In Screens, you will see the remote desktop:
Things to consider
- In order to use Curtain Mode, you need to enable Remote Management on the Mac you'll be connecting to instead of Screen Sharing. You will find instructions here.
- Curtain Mode is a feature only available on Macs and is not available on PCs.
Note: This feature depends on the macOS native Remote Management service, and so is available only when connecting to a Mac.
Configuration
Screens for macOS
You can also toggle Curtain Mode on or off from the toolbar:
Screens for iOS
You can also toggle Curtain Mode on or off from the Actions button:
On-Disconnect Actions
Note that Curtain Mode may cancel any On-Disconnect Actions sent to the remote Mac.