dorso-linux

Posture monitoring for Linux. Uses your webcam to detect slouching and overlays a progressive red glow on your screen as a reminder to sit straight.

Installation

pip install dorso-linux

System dependencies

GTK4 and PyGObject are required:

# Fedora / RHEL
sudo dnf install gtk4-devel python3-gobject

# Ubuntu / Debian
sudo apt install libgtk-4-dev python3-gi gir1.2-gtk-4.0

Usage

dorso

On first launch, sit in your best posture and click Calibrate. Monitoring starts automatically.

When you slouch, a red glow appears on your screen edges. Sit straight and it fades away.

Features

• Real-time posture detection via webcam (MediaPipe PoseLandmarker)
• Progressive screen overlay — glow, border, or solid color, with adjustable intensity
• Click-through — keyboard and mouse work normally through the overlay
• System tray with posture status and quick controls
• Analytics dashboard — daily score, 7-day chart, slouch stats
• Auto-pause on screen lock
• Dark/light theme support
• Works on GNOME Wayland, X11, Sway, and Hyprland

Configuration

Settings UI is accessible from the tray icon. Config stored in ~/.config/dorso/config.toml:

warning_mode = "glow"         # glow, border, solid, none
detection_mode = "responsive" # responsive (~10fps), balanced (~4fps), performance (~2fps)
intensity = 1.0               # 0.5 = gentle, 2.0 = harsh
slouch_sensitivity = 0.03     # lower = more sensitive
warning_onset_delay = 0.0     # seconds before warning appears
camera_id = 0                 # camera device index

How it works

1. OpenCV captures webcam frames at adaptive rates
2. MediaPipe PoseLandmarker extracts nose position and face width
3. Slouch detection compares nose Y to your calibrated baseline (5-frame smoothing)
4. A pure-function posture engine applies hysteresis to avoid flicker
5. The overlay renders via GNOME Shell extension, Layer Shell, or transparent GTK4 window

Requirements

• Python 3.11+
• Linux with GTK4
• Webcam

Links

• Source code
• Issue tracker
• GNOME Shell extension (recommended for multi-monitor GNOME)

License

MIT