GPS Trackers
How to change an AirTag battery, step by step
Changing an AirTag battery takes five steps and no tools. Here is Apple's procedure, the CR2032 compatibility catch, and the child-safety rules for the old cell.
Latest dossier · GPS Trackers · 6 min read
Does an AirTag need to be charged? Battery life and alerts
An AirTag runs on a replaceable CR2032 coin cell, not a charger. Here is what Apple says about battery life, the low battery alert and the second generation.
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Dash Cams
Dash cam footage after a crash: how to save it and why you should not delete it
After a crash, the footage on your dash cam can vanish in a few ways: the camera overwrites it, a card fills up, power cuts out, or you…
GPS Trackers
Bluetooth trackers vs GPS trackers: which one fits what you are tracking
A Bluetooth tracker tells you where your things were last heard by someone else’s phone. A GPS tracker with its own cellular connection reports where it is, by…
Counter-Surveillance & Privacy Law
Unknown tracker alerts on iPhone and Android: how to find the device and what to do
If your iPhone shows “AirTag Found Moving With You” or your Android phone shows “Unknown tracker alert,” a Bluetooth tracker that is not registered to you has been…
Counter-Surveillance & Privacy Law
Found a hidden camera? What to do next, in order
If you find what looks like a hidden camera in a bathroom, bedroom or rental, do not unplug it, pry it open or throw it in your bag.…
Counter-Surveillance & Privacy Law
Airbnb’s security camera policy: what hosts can and cannot record
Airbnb does not allow hosts to have security cameras or recording devices that monitor any part of a home’s interior, and hidden cameras are banned outright. Hosts may…
Counter-Surveillance & Privacy Law
Finding cameras on a Wi-Fi network you control vs one you don’t
On a network you control, finding a hidden Wi-Fi camera is mostly bookkeeping: log in to the router, read the list of connected devices, and account for every…
Counter-Surveillance & Privacy Law
Finding a hidden camera with a flashlight: the lens-reflection method step by step
You can find a surprising number of hidden cameras with a flashlight and ten patient minutes. The idea is simple: a camera lens is a piece of curved…
Counter-Surveillance & Privacy Law
How RF hidden camera detectors work and why they give false positives
An RF hidden camera detector is a radio receiver with a meter attached. It lights up when it picks up a transmission above a threshold, which means it…