Signal Messenger is warning that Recall, the AI tool rolling out in Windows 11 that will screenshot, index, and store everything a user does every three seconds, poses a risk to its users. Effective immediately, the Windows Desktop version will by default block the ability of Windows to screenshot the app. Of course, Microsoft provides no API to disable Recall from screenshotting specific apps, so Signal is getting creative. They are invoking a digital rights management API that blocks the screenshotting of copyrighted material.