Sihab Sahariar

Co-founder @Techub Co.

About

Software developer and builder exploring the intersection of AI, computer vision, and real-time systems. Currently shipping practical AI tools and automation gear. Always tinkering with code, hardware, and things that see. 🚀

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Maker History

UmbraA privacy screen that watches for your attention
Sep 2026

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Joined Product HuntSeptember 24th, 2026

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14h ago

Umbra - A privacy screen that watches for your attention

Umbra is a free, open-source privacy screen for Windows. It uses your webcam to notice when you look away and instantly covers your screen; look back and it's gone in 0.15 s. On-device face tracking (MediaPipe) reads head direction and eye gaze, and a one-minute calibration fits it to your desk. Cover with a blur, your own image, a GIF/video or a solid colour. Press F8 to toggle, or pause from the tray. Nothing is recorded or uploaded.