Guides
Six walkthroughs written to be useful whether or not you install anything. Each one answers its question in the first paragraph and gives you a method you can actually follow.
The most reliable inspection tool is a careful person who knows which objects are worth examining. Everything else — camera checks, network scans, Bluetooth checks — narrows down where to put your attention.
Inspecting a space
How to check a hotel room
An ordered inspection route, the objects genuinely worth examining, how to test a mirror, and why network scanning usually returns almost nothing in a hotel.
How to check a holiday rental
A rental puts you on the host's ordinary network, which makes scanning far more informative — and property rules limit what you may lawfully touch.
Understanding the methods
How camera lens reflections work
The optics behind the glint: why your eye must sit close to the light's axis, and why screws and glass reflect too.
Can an iPhone detect infrared?
Partially, and it depends on the model. What infrared-cut filtering does, and how to test your own phone with a remote control.
Unknown devices on a Wi-Fi network
Why nearly every network is full of unidentifiable devices, what a name and an open port really tell you, and how to reason about it calmly.
Bluetooth and trackers
Bluetooth tracker or ordinary device?
Behaviour over time is the only real signal: a tracker reappears near you across different places, while a single sighting means nothing at all.
How Findy works
The technical companion to these guides — every detection method the app uses, and the conditions under which each one fails.
The guided checklist is free
Findy's inspection guidance, Bluetooth scanner and magnetic checks work without a subscription. The camera and network tools are part of Findy Pro.
Last reviewed 2026-07-23 · Reviewed by the Findy team at Flaps Apps.