A “bug,” on this page, means an unauthorized camera, microphone, transmitter, or tracker placed in a space the client controls.

This service is for a home, office, vehicle, boat, or reserved meeting room you own or are authorized to have inspected. People book when confidential work is leaving the room, after an unexplained entry, before a board meeting, or when a phone, camera, or tracker on the property does not belong there.

We do not inspect a space you do not control. We do not use this page to list people to watch. Inspection is of property and information you are authorized to protect.

We are licensed California Private Investigators #PI10194.

TSCM means Technical Surveillance Countermeasures. It is a professional inspection of a physical place or item — a home, office, conference room, vehicle, boat, or case you control — for unauthorized recording, transmitting, or tracking devices, and for technical weaknesses in that space.

Our sweep team’s visit is built around five parts. Time depends on the structure, the number of rooms, and the number of phones and networks on site.

1. Radio-frequency survey of the space, including common consumer and cellular bands used by cameras, audio devices, and trackers in use today.
2. Check of phones, lines, and network paths on the property.
3. Physical inspection of rooms, fixtures, furniture, and office machines the client controls.
4. Optical check for camera lenses that are powered off and would not show up on an RF scan.
5. Review of findings with you. A written summary follows when the visit calls for one.

Detection kits sold in the shop are a different purchase. The visit is the service.

Book a residential sweep when you want a home you own or control inspected.

Two technicians complete many Bay Area residences in about four hours. Larger homes and properties with guest houses, offices, or many phone and data lines take longer.

A typical residence visit includes:

• RF survey for live transmitters, Wi-Fi and Bluetooth cameras, and cellular devices that do not belong on the property
• Phones, answering systems, and the outside interface the phone company left on the building
• Physical inspection of living areas, fixtures, and common concealment points
• Review of findings with the homeowner

Older analog cordless phones and some answering systems can still be monitored if they are left in the wrong mode. Newer risks in a residence are more often a Wi-Fi camera that was never authorized, a tracker on a vehicle in the driveway, a compromised baby monitor or smart speaker, or a device left after a contractor, guest, or prior occupant.

We quote the visit in the store. Appointment required.

The executive residence is often where work phone calls, documents, and video meetings leave the office. Our sweep team treats it as part of the same inspection plan as the office, not as a souvenir check.

We recommend scheduling the residence with the office visit when the client controls both.

The method matches a residential sweep: RF, phones and lines, physical inspection, optical lens check, then a debrief. Two technicians can complete many residences in about four hours. Estates, staff housing, and properties with shops or docks are quoted for the actual footprint.

Current issues we see at executive homes are rarely a 1990s analog cordless handset alone. They include work laptops and phones used at the kitchen table, consumer cameras and doorbells on the same network as work files, vehicles parked on the property, and devices that arrived as gifts or “upgrades” the household did not install.

These are reasons people book. They are not proof that a device is present and not legal advice.

• Confidential work or bids are known outside the room
• A meeting that should have been private is not
• Phone audio changes, unexplained ringing, or a handset that behaves as if it is still live after hang-up
• A device on the property — camera, speaker, tracker, USB stick, or “gift” gadget — that nobody authorized
• Furniture, wall plates, ceiling tiles, or smoke detectors that were moved and nobody on the property did it
• A break-in where little or nothing was taken
• Utility or delivery activity that was not requested
• After a contractor, guest, or former occupant had unsupervised access

A consumer radio or phone app is not a substitute for an inspection. Our sweep team uses survey equipment built for this work. If any of the above is happening in a space you control, call (415) 775-4779 and book the visit.

People book this service when the information in the room is worth more than the cost of the visit.

Common rooms:

• Executive offices and boardrooms
• Law, finance, medical, and research offices
• Homes where that same work continues after hours
• Vehicles, boats, and aircraft the client controls
• Off-site meeting rooms the client has reserved

Common sectors that schedule inspections:

• Legal, finance, and corporate transactions
• Technology, manufacturing, and product development
• Healthcare and research
• Construction and real-estate negotiations
• Media, public figures, and campaigns
• Any business preparing a merger, lawsuit, or public filing

The inspection is of a space and of systems on that space. It is not a service for watching a person.

Clients book when something changed.

Personal and family property you control: a home after a dispute or a break-in, a vehicle that may have been accessed, a phone or camera on the property that does not belong there.

Professional: litigation, a transaction, a public filing, a campaign, a regulated workplace, or a role that handles other people’s confidential files.

Company: labor talks, a sale or merger, a leak of bid or design information, an off-site executive meeting, or an executive residence used as a second office.

High-value rooms on a property we inspect: the office, the boardroom, the home office, the car used for work calls, and the hotel or conference room reserved for the meeting.

Keep in mind: money, access, and confidential files raise the reason to inspect the room. They do not authorize inspecting a room you do not control.

How long a visit takes depends on the structure, the number of rooms, phones, networks, and vehicles on site. A typical residence is often about four hours with two technicians. A multi-floor office, a campus, or a government-style facility takes longer and is quoted for that footprint.

A walk-through with a single handheld box is not an inspection. Devices used today may be:

• Silent until they wake (store-and-forward recorders, scheduled cameras)
• On Wi-Fi, Bluetooth, or a cellular SIM instead of an old analog transmitter
• Powered off, which means they will not show up on an RF scan alone
• Wired, optical, or hidden in a fixture that looks factory

That is why the visit combines RF survey, phone and network checks, physical inspection, and an optical lens check. Our sweep team knows the difference between a legitimate access point, a tracker the owner placed on a vehicle they own, and a device that does not belong.

We are licensed California Private Investigators #PI10194.

If our sweep team finds a device in a space you control, we stop and document. We photograph the item and the area. We do not publish removal steps on this page.

What happens next is your decision, with your counsel if you have one:

• Leave the device in place and treat the room as compromised until you decide
• Ask us to recover it as evidence
• Call law enforcement if a crime is suspected

Do not assume there is only one device. The inspection continues until the agreed scope is finished.

We do not certify that a room is “clean.” We report what the visit found. We do not give legal advice.

We are licensed California Private Investigators #PI10194.

Our sweep team brings professional inspection instruments to the site. The exact kit is matched to the property. Categories include:

• Spectrum analysis and RF survey receivers covering the bands used by analog transmitters, cellular devices, Wi-Fi, Bluetooth, and common ISM products
• Cellular / wireless activity monitoring for devices using mobile networks
• Phone and line analyzers, including time-domain tools for cabling on the property
• Optical / lens detection for cameras that are powered off
• Thermal and physical inspection tools for fixtures, furniture, and voids
• Vehicle inspection tools when a car, boat, or other asset is in scope

Shop detection kits are a different purchase. They are not a substitute for a team visit.

Quoted with the appointment. We do not publish a public price list.

TSCM (Technical Surveillance Countermeasures) is the professional inspection used to find unauthorized surveillance devices and technical weaknesses in a space the client controls. People also call it a bug sweep or debugging. On this page those words mean the same service.

The threat in 2026 is not only a tiny analog transmitter behind a picture frame. Current devices our sweep team is asked to look for include:

• Wi-Fi and network cameras placed without authorization
• Cellular (4G / 5G) cameras and audio devices that use a SIM and do not need the building’s Wi-Fi
• Bluetooth trackers and tags left on keys, bags, or vehicles
• Store-and-forward audio or video that records locally and transmits later
• Compromised or uninvited IoT: smart speakers, TVs, doorbells, baby monitors, conference bars
• USB implants and unauthorized gear on a desk
• Vehicle trackers — magnetic battery packs, hard-wired units, or devices on an OBD port
• Older analog transmitters, which still exist and are still found

Phone spyware and account takeovers are a related problem. They are not the same as a physical sweep. Say so when you book if the concern is the handset itself.

Anyone can buy cheap cameras and trackers. That is why the inspection has to cover current bands and current product types, not only the FM-radio-era devices described on older web pages.

Lawful, authorized use only. Not legal advice.

Office machines sit on the document path: copiers, multifunctional printers, conference displays, and the wireless microphone used in the same room. Sensitive paper is walked to those machines even when the machine is not inside the boardroom.

Our sweep team inspects copiers, printers, and related machines in a space you control. That includes a look for unauthorized cameras or transmitters on or inside the unit, and a check for RF from the machine that does not match its normal operation.

A well-known historical example is the Cold War practice of using a service visit to put a camera on a copier. The method has changed. Current risk on a copier or conference bar is more often a small networked camera, a cellular transmitter, or a compromised firmware/network path than an 8mm film magazine.

We do not publish how a machine would be altered. We inspect the machine you asked us to inspect.

We are licensed California Private Investigators #PI10194.

Off-site means a hotel, resort, or conference room you reserved — not a competitor’s office and not a room you do not control.

Meetings leave the building because the work is sensitive. The room, the hallway, the AV cart, and the wireless microphones in that room are part of the inspection if they are in scope.

Our sweep team can inspect the reserved rooms before the meeting starts. If the visit includes monitoring during the session, that is quoted separately and only for a room you reserved.

We do not inspect a property you do not control. We do not publish how a meeting room would be compromised.

Call (415) 775-4779 to quote an off-site visit.

On this page a “bug” is an unauthorized device used to record, transmit, or track activity in a space the client controls.

What that looks like in 2026:

• A camera or microphone hidden in an ordinary object
• A Wi-Fi or Bluetooth device on the local network that nobody authorized
• A cellular device with its own SIM, which can sit on a shelf and use the carrier network
• A tracker on a vehicle, bag, or keys
• A recorder that stores audio or video and only transmits later, or never transmits at all
• An older analog transmitter. These are less common than they were, and they are still found

Bands our sweep team surveys (inspection coverage, not a build list):

• Low-frequency and carrier-current paths on building wiring
• VHF / UHF analog ranges still used by some older transmitters
• Common ISM products near 433 MHz and 902–928 MHz
• U.S. cellular bands used by 4G and 5G devices, including roughly 600–900 MHz, 1.7–2.2 GHz, 2.3–2.7 GHz, and mid-band 5G near 3.5 GHz
• 2.4 GHz Wi-Fi and Bluetooth
• 5 GHz Wi-Fi
• 5.9–7.1 GHz Wi-Fi 6E where it is in use
• Optical / lens detection for cameras that are off and radiating nothing

A device that is powered off, wired only, or recording to a card will not announce itself on RF. That is why the visit is not “scan the air and leave.”

If you have reason to think an unauthorized device is in a space you control, call (415) 775-4779.