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.

Which Vercel product did you use? What new capability did it give your team, and how did that shape the product you launched?

We haven't built on the Vercel platform. Our one Vercel product is the Geist typeface, which we chose for Umbra's lowercase wordmark and our website. It gave a solo maker a polished, open-source type system for the brand at no cost.

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?

Which Vercel product did you use? What new capability did it give your team, and how did that shape the product you launched?

Umbra

A privacy screen that watches for your attention

A privacy screen that watches for your attention