I work from home most of the time, but every now and then, I love to get out of the house and work from a coffee shop or a coworking space. Everything was going great until one day when I decided to work in a coffee shop and went out for a few minutes to make a call. I left my laptop on because I figured I’d only be gone briefly. When I got back into the shop, I found a random person casually reading the article I had up on my laptop.

I don’t do anything shady, so I have nothing to hide. Still, it seems people don’t just respect your privacy anymore. I know I could have easily pressed Windows + L to lock my laptop before stepping away, but I usually forget since I’m so used to working alone in my room. The whole situation made me uncomfortable, and I feel there should be an easier way to combat such an issue. Turns out, Windows already has a feature for that. It’s called Dynamic Lock, and I somehow didn’t know it existed until recently.

Dynamic Lock automatically locks my PC when I walk away

Windows can use my phone’s Bluetooth connection to tell when I’ve left my computer

Dynamic Lock is one of those Windows features that makes me wonder how I missed it for so long. Microsoft introduced it with the Windows 10 Creators Update in 2017, giving Windows a way to automatically lock a PC when the user walks away.

The idea is quite simple, and genius if you ask me. Basically, I pair my phone with my Windows PC over Bluetooth and enable Dynamic Lock. As long as my phone remains within Bluetooth range, Windows knows that it’s nearby. But the moment I walk away with my phone and the Bluetooth connection is lost, Windows can automatically lock the PC.

It’s just like a digital version of remembering to press Windows + L every time I leave my desk. I still think manually locking my PC is the better habit, but having Windows handle it automatically gives me another layer of protection when I forget.

Setup only takes a few minutes

I just need to pair my phone with Windows and turn on the feature

Getting Dynamic Lock working is pretty straightforward, although there are a couple of things I need to do first. My phone needs to have Bluetooth enabled, and I need to pair it with my Windows PC.

Once the phone is connected, I can enable Dynamic Lock by going to Settings > Accounts > Sign-in options > Dynamic lock. From there, I enable Allow Windows to automatically lock your device when you’re away.

And that’s basically it. Once everything is set up, Windows uses the paired Bluetooth device as a proximity indicator. I don’t have to install another application, create an account, or configure some complex automation.

This isn’t a replacement for manually locking your PC

The automatic lock can take some time, so I still shouldn’t rely on it in risky situations

As useful as Dynamic Lock is, there’s an important limitation to be aware of. The feature doesn’t lock my PC the instant I walk out of Bluetooth range.

Windows first needs to detect that my phone is no longer nearby. It waits for the Bluetooth signal to drop below a certain threshold and also checks whether the PC is idle. That means there’s a delay between walking away and the PC actually locking itself.

In practice, it can take around 30 seconds to a full minute for the lock to happen. That might not sound like a long time, but it can be plenty of time for someone nearby to walk up to my laptop and start looking through it.

If someone sitting nearby decides to use my computer immediately after I walk away, Dynamic Lock won’t stop them. My PC could remain unlocked during that window before Windows detects that I’ve left and triggers the lock. Bluetooth connectivity can also vary depending on the environment and the devices involved, so I wouldn’t treat Dynamic Lock as a guaranteed proximity-based security system.

Dynamic Lock is more like a safety net

Manually locking my laptop every time I step away is still the safest thing to do to avoid a nosy individual from poking into my business. But Dynamic Lock gives me some extra protection whenever I forget to do that.

The feature has been part of Windows for years, yet I somehow never paid attention to it. It’s not perfect, and the delay means I wouldn’t trust it as my only security measure. But for those moments when I get distracted, walk away for a quick call, or simply forget, Dynamic Lock can close the gap between leaving my laptop unattended and remembering that I should have locked it.