Windows Recall includes settings to control which apps can be captured, and it’s also possible to delete snapshots, but the makers of Signal felt the need to add a security laye

With no official opt-out from Recall, Signal says it was forced to devise its own method to block screenshots. The new feature is now on by default.

Signal said today that it is updating its Windows app to prevent the system from capturing screenshots, thereby protecting the content that is on display.