Cable pulled? You'll hear me. Very loudly.
I guard exactly one thing — the charging cable. The moment somebody unplugs it, the siren goes off at full volume, even if your phone is completely on silent.
Only you can switch me off.
This is my pride and joy. The alarm can only be stopped inside the app, and nobody opens the app on a locked phone. Your lock screen is my authentication — so a thief holding a screaming phone can do precisely nothing about it.
Your friend hears it too. Nothing to install.
Share the watch with somebody at your table: show them the code, send a link, or just read four words out loud. Any trouble sets off the alarm on their phone as well. They need a web browser and nothing else.
And if the thief switches your phone off to shut me up, that is the one thing that cannot save them. The silence is the signal — your friend's phone starts screaming anyway.
Somebody read you four words? Open the watch.
Plug it in. Leave the rest to me.
- Plug in your phone
- Switch me on
- Walk away
There is nothing else to set up. No account, no registration, no seven-screen tutorial.
Where people leave me on guard.
-
The pub
The charger is round the corner by the bar and your back is turned.
-
The hostel
The phone charges next to the bed while you sleep.
-
The toddler
You find out in the morning, with a dead phone. I find out immediately.
An airport gate
A charging column in the middle of the waiting area, and a boarding queue that moves without you.
A café you are working in
The socket is under the next table and your laptop is on this one.
A train
A socket under the seat in front, out of sight for six hours, and everybody who walks past it.
A festival
A charging tent, a hundred identical cables and nobody watching any of them.
The cable is the one thing a thief has to touch. So it is the only thing I watch — and why an unplug alarm works anywhere.
What I don't do
No ads — not in the free version, not ever. I guard your phone, not your attention. I do not track your location, photograph thieves, or watch your motion, your pocket or your Wi-Fi. I do one thing and I do it properly, and I will not ask for a permission I do not need.
And not just my word for it: the Data safety card Google writes for me on Play says I collect no data at all.
Basic guarding works entirely offline. A shared watch is encrypted so thoroughly that we cannot read it in transit either. How that works.
Before you trust me with it.
Does it work with the phone on silent?
Yes. The siren runs on the alarm channel and puts the alarm volume back to maximum every second, so silent, do-not-disturb and a hand on the volume key all lose.
What if the thief simply switches the phone off?
Then it stops reporting to the shared watch, and the watch reads that silence as an alarm — your friend's browser starts screaming instead. Without a shared watch a phone that is off has nothing left to make a sound with, and I will not pretend otherwise.
Does guarding survive a reboot?
No. Restart the phone and guarding is off until you switch me on again. Covering that gap is the other thing a shared watch is for.
Does it need the internet?
Not for the basic watch: the cable and the siren are entirely on the phone. Only a shared watch needs a connection, and then only to carry ciphertext we cannot read.
Will it drain the battery?
I wait for the charger to change state and do nothing else — and the phone is in a socket anyway. I also never ask to be left out of battery optimisation: I lasted a night on a Pixel without it.