If SmartScreen shows "Windows protected your PC," click More info, then Run anyway.
Follow the setup wizard to install.
macOS 13+
Download GYROCUELaser_v7.0.dmg and open it.
Drag the app into your Applications folder.
On first launch, macOS will say the app is from an unidentified developer. Go to System Settings → Privacy & Security, scroll down, and click Open Anyway next to the GYROCUE Laser warning. Confirm by clicking Open again.
Still in Privacy & Security, grant Accessibility and Input Monitoring permissions to the app (required for the laser overlay to work).
Choosing a selection results in a full page refresh.