Signal has introduced a new feature in its Windows 11 application that blocks Microsoft's Recall functionality to enhance user privacy. This 'screen security' setting is activated by default for Windows 11 users and is part of Signal's efforts to protect shared content on its platform. Recall captures screenshots of user activity on Copilot+ PCs, which raised privacy concerns. While Microsoft has improved Recall, issues with its interaction with privacy-focused applications like Signal remain. The feature is specifically applicable to users with Copilot+ PCs equipped with a Neural Processing Unit (NPU). Users can disable the screen security setting through Signal Settings > Privacy > Screen security, with a warning about the privacy implications of doing so.