Buy once, in order
A kit ladder — including what never to buy.
Start with the phone. Do not skip locks for a $40 “RF app.” Jammers and planting kits are listed so you can see the legal cliff.
Tonight, $0
Phone, flashlight, paper, router admin, account inventory.
Starter, about $50–200
Locks, sensors, lens finder or basic RF, Faraday pouch, hardware keys.
Serious DIY, about $300–800
Local recorder, UPS, cellular backup, better cameras, thermal add-on.
Call a professional
NLJD, spectrum analysis, legal chain-of-custody. Lumina prepares you and documents the need.
The phone you already have
Does: Front camera for IR LED hunt, flashlight for lens glint, notes, photos stored on-device, flashlight + slow pan.
Limits: Cannot see powered-off cameras without a physical/optical search. RF “detector” apps are not real spectrum analyzers. Rear cameras often have stronger IR-cut filters.
Use: Test IR: point a TV remote at the front camera and press a button. If you see a flash, that lens can show many 850 nm night-vision LEDs in a dark room.
Legal: Only inspect spaces you own, rent, or are authorized to check. Do not record other people without required consent.
Narrow-beam flashlight
Does: Creates a bright specular return from glass camera lenses, even if the device is off.
Limits: Lots of false sparkles (screws, glossy plastic). Move your head and the light; a lens often keeps a tight glint.
Use: Lights low. Hold the light near your eye. Sweep slowly across smoke detectors, clocks, chargers, vents, USB hubs, stuffed toys, and fake standard screws.
Legal: Do not dismantle hotel or rental fixtures you do not own.
Inspection mirror + probe
Does: Lets you see behind furniture, TVs, headboards, and under desks without destroying the room.
Limits: Will not find devices inside walls without a reason to open them.
Use: Work a grid: floor → furniture → walls → ceiling. Mark anything that looks newly added, mismatched, or warm.
Legal: Do not cut drywall in a space you do not own.
Paper log + tamper envelope
Does: Creates a time-stamped record that does not live in the same cloud as your email.
Limits: Paper can be lost; photograph the page later if you need a copy.
Use: If you find a suspected device: photograph in place, note date/time/room, do not power it off if you may need law enforcement — ask them.
Legal: Destroying evidence can harm a case. When in doubt, stop and call police or a licensed investigator.
Faraday pouch (phones during a sweep)
Does: Reduces the chance your own phone is the loudest radio in the room while you listen/look.
Limits: Cheap pouches leak. Test with a call. Not a magic cloak.
Use: Bag spare phones. Keep one device for notes if needed. Never bag a device you may need for 911.
Legal: Do not use to evade lawful process.
Optical camera lens finder
Does: Array of LEDs around a viewing port; lenses return a bright point.
Limits: Shiny objects fool it. Use with a physical search, not instead of one.
Use: Darken the room. Scan at several distances and angles. Mark candidates, then inspect up close.
Legal: Same property-authorization rule as all TCSM.
Wideband RF detector (consumer)
Does: Lights up near some transmitting cameras, bugs, or trackers.
Limits: Misses store-and-forward devices that are silent for hours. False alarms from Wi-Fi, DECT phones, baby monitors, smart meters. Apps that claim to be RF detectors are not this.
Use: Turn off your own Wi-Fi/Bluetooth if you can do so safely. Walk slowly. Investigate spikes by powering down one gadget at a time.
Legal: Receiving publicly leaking RF is generally different from intercepting content. Do not decode others’ communications.
Router client list + DNS log
Does: Shows what is using your LAN. Unknown cameras often appear as generic IoT names.
Limits: Cellular cameras never join your Wi-Fi. Guest networks and mesh nodes complicate the list.
Use: Screenshot the client list. Repeat after a sweep. Note MAC vendors. Change Wi-Fi password after guests leave.
Legal: Only on networks you administer.
Password manager + passkeys
Does: Unique secrets, breach alerts, and phishing-resistant passkeys.
Limits: The vault is a crown jewel — hardware-key 2FA on the vault itself.
Use: Inventory accounts in Lumina by name only. Never store passwords in Lumina.
Legal: Do not test other people’s logins.
Hardware security keys (passkeys)
Does: Phishing-resistant sign-in for email, password manager, cloud, and later Lumina.
Limits: You must enroll two keys and keep recovery codes offline.
Use: Email first, then password manager, then financials, then security-camera cloud.
Legal: Keep recovery materials away from the cameras that watch your house.
UPS for router, NVR, and modem
Does: Keeps recording and alerting through short power cuts — a common sabotage or storm pattern.
Limits: Hours, not days, unless you add more battery or cellular backup.
Use: Put modem, router, PoE switch, and recorder on UPS. Test the alert when you pull the wall plug.
Legal: Follow electrical safety; don’t overload strips.
Cellular backup communicator / LTE camera
Does: Alerts still leave the house if someone cuts Ethernet or Wi-Fi.
Limits: The SIM/account can be attacked. Use a dedicated email and 2FA. Jamming is a real issue at the high end.
Use: Independent path from your home ISP. Confirm power-loss and tamper notifications go to a second person.
Legal: Comply with alarm-permitting rules in your city.
Grade 1/2 deadbolt + long strike screws
Does: Stops the “kick-in” that beats a cheap knob lock. 3-inch screws into the king stud matter as much as the lock brand.
Limits: Glass beside the door still needs film or a different design.
Use: Exterior doors: deadbolt, reinforced strike, hinge screws, door viewer or camera covering the approach — not your neighbor’s bathroom.
Legal: Landlord approval may be required. Don’t trap occupants — egress still matters.
Opening sensors + glass-break or film
Does: Alerts on the actual entry path. Cameras without door/window sensors are late.
Limits: Cheap sensors die on dead batteries. Check monthly.
Use: Every ground-floor opening, including garage man-door and pet doors.
Legal: Don’t disable fire-egress hardware.
Local NVR or HomeKit/Eufy-style local storage
Does: Keeps video if the cloud account is hijacked. Pair with cloud only as a copy, not the only copy.
Limits: A thief can steal the box. Hide/lock the recorder; off-site or encrypted copy if you can.
Use: Cameras on approach paths, not inside bedrooms/bathrooms. Privacy zones for neighbors.
Legal: Audio recording laws vary by state. Many people should disable mic on outdoor cams.
Doorbell / approach camera (Ring-class or equivalent)
Does: Motion on the sidewalk/driveway before someone reaches the door — early warning.
Limits: Cloud account takeover can silence you, delete video, or watch you. Use unique password, hardware 2FA, and a second alerting path. Privacy controversies exist; read the current policy. Not a substitute for locks and lighting.
Use: Point at your property’s approach. Verify power-loss and offline alerts. Write the date you set it up in Lumina’s heartbeat log.
Legal: Don’t point audio/video into spaces where others have a reasonable expectation of privacy.
Phone thermal attachment (FLIR-class)
Does: Warm electronics in odd places (behind a picture, inside a stuffed animal) can stand out.
Limits: Sun-warmed walls, pipes, and chargers create false heat. Powered-off devices may be cold.
Use: After the room has been still. Compare left/right. Confirm with physical inspection.
Legal: Don’t thermal-scan neighbors’ interiors.
Vehicle OBD and underbody inspection kit
Does: Helps you look at OBD ports, bumper cavities, wheel wells, and battery-area magnets where cheap GPS trackers hide.
Limits: Factory telematics and insurance dongles are supposed to be there. Hardwired professional installs need a shop or TSCM pro.
Use: Photograph the OBD port first so you know what “normal” looks like. Sweep after valet, repair, or a contentious dispute.
Legal: Only vehicles you own or have authority to inspect. Removing a court-authorized tracker can be a crime.
Non-linear junction detector
Does: Finds semiconductors even when a device is off — the professional differentiator.
Limits: Training required. False hits on every smart TV. This is why DIY is not TSCM.
Use: If you need this, hire a credentialed TSCM team. Lumina’s job is to get you to that decision with a clean record.
Legal: Same authorization rules; some venues require licenses/insurance.
RF / GPS jammers
Does: Nothing you should do. Jammers knock out more than the thing you dislike — including safety radios.
Limits: FCC enforcement, vehicle safety, 911.
Use: Do not buy, build, or use.
Legal: Unlawful to market or use in the U.S. for civilians. Lumina will never instruct this.
Covert cameras / audio bugs to plant
Does: Lumina is defensive. Planting devices in spaces where others have privacy rights is how people become defendants.
Limits: N/A
Use: If you need monitoring of your own property (nanny cam, etc.), use overt or clearly lawful, consented, non-bathroom placements and local counsel.
Legal: Hidden cameras in bathrooms/bedrooms/changing areas are commonly illegal even in your own home when guests/minors are involved. Get legal advice.
Witness kit (second, dumb device)
Does: A phone or recorder that never joins your Wi-Fi, never installs your usual apps, never gets repaired by you. Cellular-only or offline. Sensor only. Helper holds it — you do not take it home if every device you own is hostile.
Limits: Useless if you pair it to the owned phone, charge it from the owned laptop, or install a “crime AI” on it. Not a magic APT detector. Will not catch silent surveillance that never changes the air.
Use: Heartbeat every 1–5s is a product later; today: helper records room air, ships a signed copy immediately to two inboxes you do not control, and treats radio silence as the alarm.
Legal: Record only where you have lawful consent. The witness is not a license to intercept other people.
Always-on AI with full phone permissions “for good”
Does: Looks like a guardian. On a compromised device it is theirs: it can lie, delay, or eat evidence. A volunteer swarm that uses home PCs as launchpads is a botnet with better copywriting.
Limits: A disclaimer does not deputize you under the CFAA. False positives at swarm scale wreck innocents.
Use: Do not install. Use Witness protocol + custodians. Labs belong in a government enclave on lawfully held data — not on this handset.
Legal: Unauthorized access remains a crime. 18 U.S.C. § 1030. Lumina will never instruct a good swarm, outbound probes, or remote shell.