Using the app
Understanding posture feedback
Posture feedback is ScreenGuardian's core: it notices when you drift out of a neutral position and gives you a quiet nudge so you can reset before an ache sets in. Here is what it looks at and how to read it.
What it notices
- Slouching: your upper body sinking and rounding forward over time.
- Forward head: your head jutting toward the screen, ahead of your shoulders.
- Head tilt and lean: settling to one side or craning down.
It compares what the camera sees against the neutral reference from your calibration, so "good" means good for your body, not a textbook pose.
Why it does not nag
A reminder that fires constantly gets ignored. ScreenGuardian is adaptive: it waits for a real, sustained drift rather than reacting to every small movement, and it eases off when you are clearly just shifting around. The goal is a nudge you actually notice because it is rare, not background noise you tune out.
Reading the live view
The live view shows a simple outline of your head and shoulders so you can see what the app sees. When posture drifts, the relevant alert appears with a short, specific prompt (for example, level your head and shoulders). Sit back into a neutral position and it clears.
Habit vs. setup
If the same alert keeps returning within minutes, the cause is often your setup, not willpower. A screen that sits too low forces you to crane down; see is your screen too low? and how to fix your desk posture. Fix the angle and the reminders can do their job.
Common questions
Can I make it more or less sensitive?
Yes. Alert behavior is adjustable in settings, so you can tune how eagerly posture reminders appear. Start with the defaults for a few sessions before changing them.
Is this medical advice?
No. ScreenGuardian offers general comfort and awareness feedback, not diagnosis or treatment. For persistent pain, see a professional.