Screen-time apps are a bit like gym memberships: they work great until you decide to ignore them. Most rely on your willpower, which, let's face it, is often no match for the siren call of Instagram. They send reminders, set timers, and you swipe them away like a fly.

Enter Autonomous Key, a $9 NFC key that takes a refreshingly physical approach to digital discipline. Instead of asking you to be strong, it makes you get off your couch. You pair the key with a companion app, lock away your most distracting apps, and to unlock them, you must physically scan the key with your phone. Each unlock session lasts up to 60 minutes before the digital handcuffs go back on.

The genius here is that you can leave the key in another room, or even at the office or gym, turning a mindless impulse to open TikTok into a deliberate, effortful decision. It's like hiding your cookies from yourself, but for your attention span.

At just $9, it's a bargain compared to competitors like Blok ($29), Unpluq ($26.50), and Brick ($59). Sure, Brick offers extra features like Sleep Mode and blocking in-app purchases, but Autonomous Key covers the basics at a fraction of the price.

The key itself is about 3 inches long and works with Android 8.0 or later and iOS 15 or later. The companion app also offers AI-powered insights, tracking how often you unlock apps, how long you use them, and when you're most likely to cave. The AI has a deliberately sassy personality: if you repeatedly unlock apps right after locking them, it might snark that the key wasn't far enough away and suggest you put it somewhere less convenient.

No subscriptions or premium tiers here - one key can be paired with multiple phones, which is handy for families or multi-device households.

But there are a few hiccups. In testing, the NFC scan occasionally needed multiple attempts to register, so it's probably not ideal for locking important apps like messaging or email that you need throughout the day. And if you lose the key? Well, if your apps are locked, you'll have to uninstall and reinstall the companion app. If they're already unlocked, you can just remove the key from your account. The company promises a backup unlock method in a future update.

Autonomous Key is currently in beta after a Kickstarter campaign and began shipping earlier this month. It comes in five colors: pink, orange, blue, gray, and brown.

So, if your phone is your digital nemesis, this little key might be the weapon you need. Just don't lose it.