Windows Recall is an AI-powered feature introduced by Microsoft for Copilot+ PCs that takes periodic snapshots of a user's screen to create a searchable visual timeline of past activity. First announced in May 2024, the feature faced significant backlash from security researchers and tech outlets like PCWorld over privacy risks, prompting Microsoft to delay its initial rollout, make the feature opt-in, and secure data access with Windows Hello biometrics. According to documentation from Microsoft and HP, all snapshots are processed and encrypted locally using an on-device Neural Processing Unit (NPU) rather than sent to external servers.