Windows' built-in idle lock is one all-or-nothing timer. It can lock your screen after inactivity, but it won't dim the actual backlight to save power, and it won't hide what's on screen before the lock kicks in. PowerDoze adds three independent actions — real backlight dimming, a privacy overlay, and screen lock — each on its own timer.
Windows 11's Presence Sensing (Settings → System → Power) uses a hardware presence sensor — an IR or time-of-flight camera — found only on select newer laptops. When it's present, it can lock the screen the moment you physically walk away and wake the PC when you approach. What it doesn't do: dim the backlight to save power, or hide on-screen content with a privacy overlay before locking. And if your PC doesn't have that specific sensor — which is most PCs — it does nothing at all; there's no idle-timer fallback. PowerDoze uses ordinary keyboard/mouse idle detection instead, so it works on any Windows PC or laptop, and it adds power-saving and privacy on top of locking, not just locking.
| Action | What it does | Typical delay | Benefit |
|---|---|---|---|
| Dim backlight | Genuinely lowers monitor brightness via hardware (WMI for laptop panels, DDC/CI for external monitors) | e.g. 5 min | Real power saving |
| Privacy overlay | Covers the screen with a dark, semi-transparent layer so passersby can't read it | e.g. 5 min (independent) | No gradual fade — fully hidden the moment it triggers |
| Lock screen | Triggers Windows' own native lock screen | e.g. 15 min | Full security |
Settings → Accounts → Sign-in options → set a single "require sign-in" timer. It works, but it's one on/off switch: no gradual dimming to save power beforehand, no way to hide the screen from view sooner than the lock itself, and no separate timer for each behavior.
Best for: Basic security with zero setup. Limit: No power savings, no privacy layer before the lock, one timer for everything.
Set your own idle-minute threshold for each: dim the backlight after, say, 5 minutes (real hardware brightness reduction — falls back to a visual overlay automatically if a specific monitor doesn't support DDC/CI), cover the screen with a privacy overlay on its own timer, and lock after a longer delay like 15 minutes. Adjustable opacity for the overlay, adjustable brightness floor for the dim, and test/preview buttons so you can see the effect without waiting for the real timer.
All three restore automatically the instant you're back — the overlay hides within about a second of any input.
Best for: Anyone who wants real power savings plus privacy, not just a lock screen. Honest limit: Backlight dimming needs a monitor that supports WMI (laptop panels) or DDC/CI (most external monitors, but not all) — unsupported displays automatically use the overlay instead.
Dimming lowers the monitor's actual backlight brightness via hardware — genuine power savings. The privacy overlay is a separate action: a dark, semi-transparent layer over the desktop so passersby can't read it. They run on independent thresholds.
PowerDoze tries real hardware backlight control first (WMI for laptop panels, DDC/CI for supported external monitors) — a genuine power-saving reduction. If a monitor doesn't support DDC/CI, it automatically falls back to the visual overlay for that display.
Presence Sensing needs a hardware presence sensor found only on select newer laptops, and it only locks — no dimming, no privacy overlay. PowerDoze uses ordinary idle detection, works on any PC, and adds three independent actions.
The privacy overlay hides within about a second of any input (checked every 150ms). Backlight brightness restores within a few seconds on PowerDoze's regular status check.
No — fullscreen apps, recognized meeting apps, and anything on your keep-awake whitelist all suppress dimming, the overlay, and locking. Custom exclusions are also supported.
Yes. Backlight dimming works on any DDC/CI-capable external monitor (most modern ones), and the privacy overlay and lock work on any display.
Away mode is a PowerDoze Pro feature (one-time purchase, not a subscription) — dim, privacy overlay, and lock each have their own threshold slider, plus test/preview buttons.
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