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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.
Hey Product Hunt! 👋 I'm Sihab, and I built Umbra.
The problem: I kept turning to talk to someone, or glancing at my phone, while messages, code or a bank tab sat wide open on my screen. Privacy filters and "lock your PC" habits don't help in those five-second moments.
What Umbra does: it uses your webcam to notice when you stop looking at your screen, and covers it within about 0.7 s: a blur, your own image, a GIF/video or a solid colour. Look back and it's gone in about 0.15 s. The demo is a real recording of me doing exactly that.
How it works: Google's MediaPipe face landmarker runs on your PC and measures head direction and eye gaze about 15 times a second. A one-minute calibration has you look at your screen edges and then away, so the limits fit you, your chair and wherever your camera sits.
Privacy was the whole point: frames are processed in memory and thrown away. Nothing is recorded, saved or uploaded, and the whole thing is open source (GPL-3.0), so you don't have to take my word for it.
It's free for Windows 10/11. Press F8 to toggle it, or pause it from the tray.
I'd love to know: when would you want your screen hidden? And what should come next: a Mac version, auto-lock after longer absences, or per-app rules?
About Umbra on Product Hunt
“A privacy screen that watches for your attention”
Umbra was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #160 on the daily leaderboard. 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.
On the analytics side, Umbra competes within Productivity, Open Source, Privacy, GitHub and Vercel Day — topics that collectively have 783.2k followers on Product Hunt. The dashboard above tracks how Umbra performed against the three products that launched closest to it on the same day.
Who hunted Umbra?
Umbra was hunted by Sihab Sahariar. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Umbra including community comment highlights and product details, visit the product overview.
Sihab Sahariar