How to Check for Hidden Cameras in a Hotel Room (2026)

Hidden cameras have been found in Airbnbs, hotel rooms, changing rooms, and rental apartments in every country. A 2025 survey of over 1,000 Americans by IPX1031 found that nearly half (47%) say they have discovered a camera in a rental property — almost double the 25% who reported the same in 2023 — while 64% admit they do not know how to detect one. Knowing how to detect them takes less than ten minutes — if you know exactly what to look for.

What does a hidden camera look like?

The short answer: nothing like a camera. Modern spy cameras are designed to disappear inside everyday objects. The lens — usually 3–5 mm in diameter — is the only giveaway, and it only reflects light under specific conditions.

“The problem with spy cameras today is that the hardware is cheap, miniaturised and completely indistinguishable from legitimate household objects. A pinhole lens smaller than the tip of a ballpoint pen is all that separates your private space from someone else’s recording.”

Common disguises: smoke detectors, power outlets, clocks

These are the six objects most commonly used to conceal recording devices, based on reported cases and marketplace listings for spy cameras:

• Smoke detectors — ceiling-mounted, wide field of view, rarely inspected by guests. A working smoke detector with a lens hole at the centre or edge is one of the most-reported finds in short-term rentals.
• USB wall chargers and power adapters — they need a power source; a mains adapter provides one permanently. Look for a dark circular pinhole on the face of the plug, or a slightly raised bump.
• Digital alarm clocks — common on bedside tables, pointed directly at the bed. The lens is usually hidden behind the clock face or in the “12 o’clock” vent slot.
• Wi-Fi routers and smart speakers — frequently ignored because guests expect them in a rental. Check for a pinhole on the front face that does not correspond to any microphone grille.
• Air purifiers and desk fans — vent slots provide natural cover for a small lens. Any electronic device that sits facing the room is worth a second look.
• Picture frames and decorative objects — a frame hung opposite the bed or shower area at an unusual angle deserves close inspection.

How small can a hidden camera be?

The smallest commercially available spy camera modules measure approximately 8 × 8 mm — roughly the size of a pencil eraser. Many record 1080p video, support night vision via infrared LEDs, and run for 6–12 hours on an internal battery. Some are sold with motion-activation to avoid filling an SD card with empty footage. This last point is important: it means a camera can be recording you even when there is no visible light, no Wi-Fi signal, and no audible sound.

Methods that rely solely on network scanning will not catch these devices.

How to find hidden cameras: 7 proven methods

Use these methods in order. The first three cost nothing and take under five minutes combined. Together they catch more than 90% of consumer-grade spy cameras sold online.

“Most people have no idea how much information a tiny, inexpensive camera can collect about them. The assumption that a hotel or rental space is private is often wrong — and the countermeasures are far simpler than people think.”

1. Use an online hidden camera detector (no app needed)

Before doing anything physical, run a network-based scan from your browser. Our free hidden camera detector analyses the Wi-Fi environment around you — identifying IP cameras, unknown connected devices, and suspicious device fingerprints — without requiring an app download or account. Open it on your phone the moment you arrive at a rental, before you unpack.

What it catches: any IP camera that is transmitting on the local network, including devices that appear to be something else (a “smart plug” or “router” that is actually streaming video). What it does not catch: cameras recording to an SD card with no network connection. That is why the remaining six methods matter.

2. Physical inspection — what to look for

Walk the room systematically. Start at the door, move clockwise, keep your eyes at lens height (roughly 1–1.5 m) and at ceiling level. You are looking for three things:

1. Pinholes or unusual holes in walls, ceilings, objects, or furniture. A pinhole the size of a ballpoint pen tip is enough for a camera lens to capture an entire room.
2. Objects that are slightly misaligned or oddly positioned — a smoke detector off-centre, a clock facing the bed from an unusual angle, a book on a shelf with a gap facing the room.
3. Wires that lead nowhere — a USB cable plugged into a wall adapter that connects to nothing visible, or wires taped along a skirting board toward an air vent.

Pay particular attention to the bedroom and bathroom. In documented Airbnb cases reported by guests and covered by outlets including BBC News and The Guardian, the overwhelming majority of hidden cameras were found in sleeping areas and bathrooms — the two zones where guests have the strongest expectation of privacy.

3. Use your smartphone camera to detect infrared (IR) light

Most hidden cameras use infrared LEDs for night vision. The human eye cannot see IR light, but many smartphone cameras can — particularly the front-facing (selfie) camera, which typically lacks the IR-cut filter present on rear cameras.

On iPhone (iOS):

1. Open the Camera app and switch to the front-facing camera.
2. Turn off all lights in the room.
3. Slowly sweep the camera around the room, watching the screen — not the room itself.
4. IR LEDs appear as a bright white or purple-white glow on your screen. Even a single LED cluster is visible from 3–4 metres.

On Android: Most Android front cameras also detect IR. Open the default camera app, switch to front camera, and repeat the steps above. If the front camera does not show IR, try the rear camera — some Android manufacturers do not include IR filters on either lens.

Limitation: cameras not using IR (daytime-only cameras or devices relying on the room’s ambient light) will not produce a glow. Combine this with the flashlight method below.

4. Scan the Wi-Fi network for unknown devices

Connect to the property’s Wi-Fi, then use a network scanner to list every device on the network. Any IP camera will appear as a connected device. Look for device names containing “cam”, “ipcam”, “nvr”, “dvr”, or “stream”. Also watch for devices with manufacturers you do not recognise — many cheap spy cameras identify themselves as generic “Shenzhen” or “HiSilicon” devices.

Our online detector performs this scan automatically in your browser. Alternatively, apps like Fing (iOS/Android) provide a manual device list. A legitimate Airbnb typically shows: the router, a few smart home devices (thermostat, doorbell), and the host’s phone if they are nearby. More than five or six devices in a single-room rental warrants further investigation.

5. Flashlight sweep — the lens reflection trick

Camera lenses are made of coated glass and will reflect a direct light source back at you, even when the camera is powered off. This method works in daylight — you do not need a dark room.

1. Use the brightest flashlight available — the torch on a smartphone works.
2. Hold it at eye level and angle it approximately 30–45° to the surface you are inspecting.
3. Slowly sweep across walls, objects, shelves, and vents. Keep your eyes slightly squinted to reduce ambient glare.
4. A camera lens will return a small, bright, round reflection — brighter and more precise than the diffuse shine of a painted surface. It may flash briefly as you move the beam across it.

This technique works on cameras even when they have no power. It is the single most reliable low-tech method for detecting a hidden lens, and it costs nothing.

6. RF (radio frequency) detector

A handheld RF detector picks up the radio signals emitted by wireless cameras as they transmit footage. Entry-level detectors (€15–40) cover common camera transmission bands including 1.2 GHz, 2.4 GHz, and 5.8 GHz. Professional units (€80–200) can distinguish between device types and pinpoint signal direction.

How to use one: power it on, set sensitivity to maximum, and walk slowly through the room. Hold it close to objects and listen for a rapid beep or watch the signal indicator. A sustained strong signal from a smoke detector or alarm clock — two objects that have no reason to transmit RF — is a red flag.

Important limitation: RF detectors only catch cameras that are actively transmitting. A camera recording to an SD card emits no RF signal and will not be detected this way. For frequent travellers, an RF detector is a useful addition but not a complete solution on its own.

7. Two-way mirror test

A standard mirror reflects light from both sides; a two-way (one-way) mirror only reflects from one side and allows a camera on the other side to record through it. Two simple tests:

The fingernail test: Touch the tip of your finger to the mirror surface. In a standard mirror, there is a visible gap between your fingertip and its reflection. In a two-way mirror, the reflection meets your fingertip with no gap — the reflective coating is on the surface, not the back of the glass.

The flashlight test: Cup both hands around your eyes to block ambient light, press them against the mirror, and shine a flashlight through. If the space behind the mirror is dark (a wall), you will see nothing. If it is a two-way mirror with a room behind it, you will be able to see into that space.

Two-way mirrors are rare in short-term rentals but have been documented in changing rooms, gyms, and older hotel rooms.

Detection method comparison

No single method catches everything. The flashlight sweep and physical inspection together provide the best coverage for offline cameras. The online detector and IR test cover the majority of active wireless devices. Run all four free methods every time.

• The flashlight lens sweep is the only free method that detects cameras regardless of whether they are powered on, connected to a network, or using infrared.
• The online detector / network scan catches the broadest range of actively transmitting wireless cameras with zero hardware cost.
• The IR smartphone test is the fastest method for ruling out night-vision cameras in a dark room in under one minute.
• RF detectors add coverage for analogue wireless transmission bands not covered by Wi-Fi scanning, but require a hardware purchase.
• No app, tool, or single technique is sufficient alone — the free four-method combination (online scan + IR test + flashlight sweep + physical inspection) provides the best realistic coverage.

Your 10-minute room sweep: zone by zone

No competitor guide gives you this. Most list techniques and leave you to figure out how to actually apply them to a room you’ve just walked into. Here is a structured sweep that takes ten minutes and covers every realistic hiding spot.

Step 1 — Run the network scan before you unpack (60 seconds)

Connect to the property’s Wi-Fi immediately on arrival. Open the online detector or launch Fing. Let it run while you carry your bags in. Any result flagged as a camera or unknown streaming device should be noted before you proceed. Do this first because it requires no movement around the room and gives you early warning of the most obvious threat: a Wi-Fi-connected camera transmitting live.

Step 2 — Bedroom: the highest-risk zone (4 minutes)

Stand at the bedroom doorway and identify every electronic device in the room. Count them. Anything you cannot account for from the listing photographs warrants closer inspection. Work clockwise:

• Ceiling: Shine your flashlight at the smoke detector (or any ceiling fixture). Look for a pinhole offset from the centre that does not correspond to the test button or indicator LED. Check the mounting plate — a gap between the detector and the ceiling may indicate it was opened and resealed.
• Bedside table: Turn the alarm clock away from the bed or put it face-down. Run the IR sweep (phone front camera, lights off) from the bed position. Any active night-vision camera in the room will glow. Check the USB charging hub — look for a pinhole on the face that does not correspond to a port.
• Shelves and picture frames: Pull shelves slightly away from walls and check the rear. Look for gaps in book spines that face the room rather than the wall. Tilt frames forward — a camera lens behind a frame needs either a hole in the frame or a gap at the bottom to see through.
• Air vents and wall outlets: Shine your torch into any decorative vent. If a device is plugged into a wall outlet that you cannot account for, unplug it and inspect the face for a pinhole lens.

Step 3 — Bathroom: small space, high stakes (3 minutes)

The bathroom is the second most common location for hidden cameras in short-term rentals and the most serious from a legal standpoint — recording someone in a bathroom is a felony in most US states and carries equivalent criminal penalties in the UK and EU. Do not skip this zone.

• Showerhead and shower area: Examine the showerhead for a pinhole at the base or on the face. Check any toiletry dispensers mounted to the wall — mounts are sometimes replaced with camera-containing versions.
• Towel hooks and hooks in general: The “towel hook camera” is one of the most widely sold hidden camera formats available online. Twist the hook slightly — legitimate hooks turn smoothly; camera hooks often have a subtle resistance or a pinhole visible from directly in front.
• Smoke detectors and extractor fans: Both are commonly present in bathrooms and both have been used to conceal cameras. Extractor fan grilles with unexpected pinholes near the edge (not at the motor) are a warning sign.
• Electrical outlets and shavers sockets: Same inspection as the bedroom — look for a pinhole on the face that does not correspond to a socket hole. Feel the outlet lightly — a camera behind a fake outlet often feels lighter or slightly hollow compared to a wired outlet.

Step 4 — Living area and entrance (2 minutes)

These zones are lower risk for voyeurism but still worth a quick pass. In the living area: inspect any bookshelf or media unit facing the sofa. Check the TV unit — a small camera embedded in or behind the TV screen is uncommon but documented. Any “smart speaker” that is not listed in the property description deserves a close look at the front face for a misaligned grille opening.

At the entrance, a doorbell camera or entry-facing camera is permitted if disclosed in the listing. If it is not disclosed — check the listing carefully, not the host’s verbal assurance — it is still a violation. Note it and raise it with the platform before accepting the stay.

Step 5 — Mirror check (1 minute)

Perform the fingernail test on every large mirror — bathroom mirror, bedroom wardrobe mirror, any full-length mirror. Then do the flashlight test on any mirror mounted against a wall that could conceivably have space behind it. Wall-mounted mirrors in bathrooms and near beds are the highest priority.

What your smartphone can and cannot do

Phone-based detection methods are genuinely useful — but they are consistently oversold in competing guides. Here is an honest breakdown of what your phone actually catches and what it misses, so you can allocate your sweep time correctly.

The key limitation worth repeating: any app that claims to use your phone’s magnetometer or EMF sensor to “detect hidden cameras” is not a real detection tool. These apps register interference from any nearby electronics — your own phone, the TV, the Wi-Fi router — and are functionally useless for identifying cameras specifically. Ignore them. Stick to the IR camera method and network scanning, and supplement with the flashlight sweep.

Where are hidden cameras most commonly placed?

Airbnb and vacation rentals

The highest-risk zones in a rental, in order of frequency based on publicly reported cases. A 2025 survey of over 1,000 Americans by IPX1031 found that 47% reported discovering a camera in a rental property — and among those who found one, 1 in 5 found it in a bedroom or bathroom, the two spaces where guests have the highest expectation of privacy (IPX1031 2025 Vacation Rental Study):

1. Bedroom — specifically positioned to capture the bed. Smoke detectors, alarm clocks, air purifiers, and decorative shelves are the most common placements.
2. Bathroom — showerhead fixtures, towel hooks, and wall outlets. Any hole in a bathroom wall near the shower or toilet should be treated as suspicious.
3. Living area — TV units and bookshelves facing the sofa. Less common than bedroom placement, but documented.
4. Entrance / hallway — often legitimate (doorbells and entry monitors are permitted and should be disclosed by the host). If undisclosed, these are still a violation.

Airbnb’s policy prohibits cameras in private spaces (bedrooms, bathrooms) entirely and requires all other cameras to be disclosed in the listing. If a camera is not in the listing description, it should not be in the property.

Hotel rooms

Hotels present a slightly different risk profile. Staff have ongoing access to rooms, and in-room objects like alarm clocks and TV remotes are provided by the property rather than the guest. Focus your sweep on: the alarm clock (turn it to face the wall or put it in a drawer), any small black box near the TV, the peephole (reversible peepholes can be turned to look inward), and picture frames on walls directly facing the bed.

One specific vulnerability in hotels that almost no guide covers: the reversible door peephole. Standard peepholes are one-directional. Cheap reversible models — available for under £10 — can be unscrewed from the inside and flipped so that someone in the corridor can see into your room. If your door peephole looks smudged, misaligned, or slightly loose, cover it with a piece of card or tape from the inside.

Changing rooms and public restrooms

Recording someone in a changing room or restroom is a criminal offence in most jurisdictions, not a civil matter.

If you find a camera in a changing room or restroom, do not touch it — preserve the evidence and call the police immediately.

Can a hidden camera work without Wi-Fi?

Yes — and this is the most commonly overlooked fact in most guides on this topic. A significant portion of consumer spy cameras sold today operate entirely offline. They record footage to a microSD card (typically 32–256 GB), which the person who placed them retrieves physically. Some use motion-activation to conserve storage, meaning they only record when there is movement in the frame.

These cameras emit no Wi-Fi signal, no RF signal, and no IR light (if recording in daylight). They are completely invisible to network scanners. The only methods that reliably detect them are the physical inspection and the flashlight lens sweep. This is why no single app or online tool is sufficient on its own — and why the flashlight method, despite being low-tech, belongs at the centre of any real sweep.

Offline cameras are particularly common in cases involving longer-term rentals, because the person placing them intends to retrieve the device and the footage multiple times. If you are staying somewhere for more than a few nights, check again after the first night — some offline cameras are placed during a mid-stay maintenance visit.

How to book smarter and reduce your risk before you arrive

Detection is the last line of defence. The better approach is to reduce the likelihood of ending up in a compromised property in the first place. None of the top-ranking guides cover this — they assume the threat begins at check-in. It begins at the search page.

• Read recent reviews specifically for privacy mentions. Search within the reviews for the words “camera”, “surveillance”, or “privacy”. One mention should be enough to make you look elsewhere. On Airbnb, reviews cannot be deleted by the host — they are a reliable signal.
• Check that camera disclosure is explicit, not implied. On Airbnb, hosts are required to list all cameras (from 2023) and are banned from indoor cameras entirely (from April 2024). If a listing says nothing about cameras at all, that is technically compliant — but any outdoor camera should be mentioned. If the listing mentions a camera in a vague or unclear location, ask for clarification before booking.
• Prefer larger chain hotels for high-privacy stays. Not because chains are morally superior, but because they have compliance departments, legal exposure, and staff turnover that makes sustained covert recording far more difficult to maintain. Independent boutique hotels and unbranded rentals carry a statistically higher risk.
• Avoid brand-new listings with no reviews. A listing with fewer than five reviews, created in the past six months, and priced attractively is a profile that matches several documented hidden camera cases. This is not a certain indicator of a problem, but it is a combination worth taking seriously.
• Check the listing photos for in-room electronics. The photos provided by the host are a useful baseline for what should be in the room. If the photos show a simple bedside table and you arrive to find a USB charging hub, an air purifier, and an alarm clock you do not recognise, those discrepancies warrant inspection.

Is it legal to install hidden cameras? Know your rights

The legal position is broadly consistent across major jurisdictions: recording someone without consent in a private space where they have a reasonable expectation of privacy is a criminal offence. The key concept is “reasonable expectation of privacy” — which covers bedrooms, bathrooms, changing rooms, and anywhere a person would reasonably expect not to be observed.

“The concept of a ‘reasonable expectation of privacy’ is the cornerstone of most laws governing hidden surveillance — and courts in the US, UK, and EU have consistently held that bedrooms, bathrooms, and changing rooms fall squarely within that protected zone.”

United States: Federal wiretapping law (18 U.S.C. § 2511) and state voyeurism statutes both apply. Most states carry criminal penalties of 1–5 years for covert recording in private spaces. Civil suits for invasion of privacy are also available.

United Kingdom: The Voyeurism (Offences) Act 2019 specifically criminalises covert recording of private acts. The offence carries up to two years imprisonment. The Data Protection Act 2018 also applies to stored footage.

European Union: GDPR treats video footage of identifiable individuals as personal data. Covert recording without a legal basis is both a criminal matter and a GDPR violation carrying fines of up to €20 million or 4% of global annual turnover. Individual member states add criminal penalties on top.

What to do if you find a hidden camera

Most guides give a single throwaway line: “contact the police.” Here is the actual sequence that protects your evidence, your legal options, and other future guests.

1. Do not touch or move the camera. Touching it may destroy forensic evidence and could technically be considered tampering with property in some jurisdictions. Your hands off the device at all times.
2. Photograph the camera in place using your phone, capturing its location and surroundings. Photograph from multiple distances and angles. Include nearby landmarks (a socket, a window, a door) that place the camera in context.
3. Leave the room. If in an Airbnb, gather your belongings and leave the property if you feel unsafe. You are not obligated to remain.
4. Contact the platform before contacting the host. Airbnb has a dedicated safety line (+1-855-635-7754). Vrbo and Booking.com have similar dedicated reporting channels. Contacting the host first gives them an opportunity to remove evidence or dispute the find. Report to the platform first.
5. File a police report. Even if you are travelling and will not be present for an investigation, a filed report creates an official record. Police in most jurisdictions take covert recording seriously — it is a criminal matter, not a complaint. A report filed in the country where the offence occurred is more actionable than one filed at home.
6. Preserve all evidence. Do not delete photographs. Do not allow the host to “fix the issue” or “remove the device” while you are still on the property. Note the time of discovery, the device location, and what was visible within the camera’s field of view — this matters for any subsequent civil claim.
7. Request a refund and alternative accommodation from the platform. Both Airbnb and Booking.com have policies that entitle guests to a full refund and rebooking assistance when a safety violation is confirmed. This is separate from any criminal complaint and can be pursued simultaneously.

Frequently asked questions