Inside the sweep

See what a real sweep sees.

The instruments corporate and government counter-surveillance teams rely on — in your home or office.

Laptop running live RF spectrum-analysis software
Field-sweep companion app on a phone
RF · NLJDactive + dormant devices
THERMALconcealed electronics
OPTICALhidden camera lenses
Laptop and spectrum softwareLaptop & SoftwareLIVE SPECTRUM
RF antenna receiver boxRF Antenna BoxWIDEBAND SDR
Field-sweep phone appPhone AppFIELD SWEEP
Handheld thermal imaging cameraThermal IR CameraHIKVISION
Technical Surveillance Countermeasures · TSCM

If you think you're being watched or listened to — let's know for certain.

A professional counter-surveillance sweep that locates hidden cameras, covert microphones, GPS trackers, and wiretaps — using the same class of detection equipment relied on by corporate and government TSCM teams. Discreet, methodical, and completely confidential.

100% Confidential Licensed, Bonded & Insured Professional-Grade Detection Equipment
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Peace of mind, verified

A hidden camera or microphone is built to be invisible. Finding one takes the right equipment — and the trained eye to use it.

Phone "detector" apps and bargain RF wands miss the devices that matter. Our technicians sweep the full radio spectrum, find electronics even when they're switched off, and physically inspect every place a device could hide — then hand you a clear, documented answer.

When a sweep makes sense

If something feels off, it's worth knowing.

People come to us the moment privacy stops feeling certain. A professional sweep replaces that doubt with a documented answer.

Your home or personal space

You suspect a device was placed by an ex-partner, a former houseguest, a contractor, or anyone who has had a key.

Executives & boardrooms

Offices and meeting rooms before sensitive negotiations, deals, or announcements — where leaked information has a real price.

Divorce, custody & domestic

When a current or former partner may be monitoring your conversations, your messages, or your movements.

Your vehicle

GPS trackers and audio devices hidden in or under a car are cheap, common, and easy to plant without you ever knowing.

Rentals, hotels & Airbnb

Hidden cameras in short-term rentals and hotel rooms are a real and growing problem — especially in bedrooms and bathrooms.

Attorneys & high-profile clients

Confidential legal matters, public figures, and high-net-worth households where discretion is simply non-negotiable.

What we find

The devices a sweep is built to uncover.

Surveillance gear is small, cheap, and easy to hide — and most of it is designed specifically to defeat a casual look. Here is what we systematically hunt for.

Most common find

Hidden cameras

Wired, wireless, and pinhole. We detect both the camera lens and any transmitter — whether or not the device is actively recording.

Covert microphones & audio bugs

RF transmitters that quietly send your conversations to a nearby listener or recorder, often hidden in everyday objects.

Cellular (GSM / 4G / 5G) bugs

Devices that use the mobile network to stream live audio to anywhere in the world — no nearby receiver required.

GPS trackers

Real-time and logging trackers concealed in or on a vehicle, reporting your location and routes without your knowledge.

Wi-Fi & Bluetooth devices

Covert cameras and mics that ride your own network — or a hidden hotspot of their own — to move data off-site.

Wiretaps & line taps

Taps placed on telephone lines, structured wiring, and telecom points that intercept calls and data at the source.

How we look — and why it works

The equipment a real sweep requires.

Anyone can wave a $30 detector around a room. Finding a device that is dormant, shielded, or built to hop frequencies takes professional instruments — and the training to read them.

Full-spectrum RF analysis

We sweep the entire usable radio spectrum to locate anything transmitting audio or video — including burst and frequency-hopping transmitters that consumer detectors never catch.

  • MHz-through-GHz coverage
  • Finds active audio, video & cellular bugs
  • Locates the source, not just the signal

Non-Linear Junction Detection

An NLJD responds to the semiconductors inside electronics even when a device is switched off, drained, or sealed inside a wall — the single most important tool for finding dormant bugs.

  • Detects powered-off & dormant devices
  • Sees through walls, furniture & objects
  • The gold standard of professional TSCM

Thermal & optical detection

Thermal imaging reveals the heat of concealed, powered electronics; optical lens detection catches a camera lens by its reflection — no matter how small the pinhole.

  • Thermal signatures of hidden electronics
  • Camera-lens reflection detection
  • Effective on pinhole & "spy" cameras

Line, network & physical inspection

We test telephone and data wiring for taps, examine your Wi-Fi for rogue devices, and physically inspect every realistic concealment point by hand.

  • Telephone & data line analysis
  • Wi-Fi / Bluetooth device discovery
  • Methodical hands-on physical search
MHz–GHzfull-spectrum RF coverage
On + Offfinds live and dormant devices
Writtendocumented findings report
100%confidential, every time
How it works

What a professional sweep looks like.

A clear, discreet process — from your first private call to a documented answer in hand.

Consult

A private, no-judgment conversation about what's prompting your concern and the spaces involved. Confidential from the first word.

Plan

We design the sweep around your situation — including unmarked arrival and after-hours timing whenever discretion matters.

Sweep

On-site: RF spectrum, NLJD, thermal, optical, network, and line analysis, plus a hands-on search of every concealment point.

Report

A clear verbal briefing and a written report — what we found, what we cleared, and exactly what to do next.

Before you call: if you believe a device may already be active, reach us from a phone and a location you don't suspect — not from inside the space you're worried about — and avoid discussing your concerns there. We'll guide you from your very first call.

Why Secure & Alert

Discretion, expertise, and a name you can stand behind.

Licensed, Bonded & Insured 100% Confidential NDA on Request Detailed Written Report

Discretion first

Unmarked vehicles, plain clothes, and after-hours appointments on request. No signage, no attention — no one needs to know we were ever there.

Trained & equipped

Our technicians use professional TSCM-grade instruments — not app-store gadgets — and, just as importantly, know how to interpret what those instruments report.

A real local company

We're the same licensed Northern California security firm that protects homes and businesses every day — accountable, reachable, and here for the long term.

Good questions

What people ask before a sweep.

What is a TSCM bug sweep?
TSCM — Technical Surveillance Countermeasures — is the professional practice of detecting and locating hidden surveillance devices: cameras, microphones, GPS trackers, and wiretaps. A sweep combines electronic detection across the radio spectrum with a thorough, hands-on physical inspection.
Can you find a device that's turned off?
Yes. A non-linear junction detector (NLJD) responds to the electronic components inside a device whether or not it's powered on or transmitting. That's exactly how dormant, scheduled, or motion-triggered devices are found — the ones a simple RF detector would walk right past.
Will sweeping tip off whoever planted it?
We work as passively and discreetly as possible. Much of our detection is receive-only, and we plan timing and arrival specifically to avoid drawing attention. If you have concerns about being observed, tell us up front and we'll plan around them.
How long does a sweep take?
It depends on the size and complexity of the space. A single vehicle or room is relatively quick; a full home or office takes longer. We give you a realistic time and cost estimate before we begin — no surprises.
Do I get something in writing?
Yes. You receive a written report covering what was inspected, what was found, and our recommendations — suitable for your own records or to share with your attorney.
Is this confidential?
Completely. Discretion is the core of this service, and we're glad to sign an NDA on request. What we find — and the fact that you called at all — stays between us.

Request a confidential sweep.

Tell us a little about your situation. Every inquiry is private, and we'll arrange a discreet consultation — often within the same week.

888.348.9520
  • 100% confidential — always
  • Unmarked, discreet arrival on request
  • Clear, written findings report

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