Cuukit Screen Lid
A macOS menu bar app that covers connected displays behind a PIN while holding the Mac awake for background tasks.
Open productWhat it does
About Cuukit Screen Lid
Cuukit Screen Lid is a free macOS menu bar application designed for Apple silicon systems running macOS 12 or newer. It allows users to cover all connected displays behind a four-digit PIN while keeping the Mac awake, enabling AI agents and background processes to continue uninterrupted. Unlike standard macOS screen locking, active browser tabs remain rendered at full frame rate under the cover overlay. The app operates fully locally with no network requests, storing PINs as salted scrypt hashes and leveraging macOS Accessibility permissions to prevent unauthorized dismissal.
- Availability:
- launched
- Access:
- free
- Format:
- software
- Platform:
- macos
Pricing at launch: Free and requires no account.
Core capabilities
Multi-Display PIN Protection
Covers all connected displays behind a four-digit PIN while holding the Mac awake for as long as the cover remains active.
Local Security Architecture
Stores user PINs as salted scrypt hashes and operates completely offline without sending data over a network.
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