Drone detection: a buyer’s guide.

Detection and mitigation are different things

• Detection. Radar, cameras (electro-optical and infrared), acoustic sensors, radio-frequency sensors and Remote ID receivers that find, track and identify a drone, and sometimes locate its pilot.
• Mitigation. Anything that interferes with the drone: jamming its radio or satellite signals, spoofing, taking over its control link, or physically capturing or downing it.

The 2020 interagency advisory from the Justice Department, DHS, the FAA and the FCC says the legal risk turns on how a particular system works, not on broad labels such as “passive” or “detection only”.

Who may mitigate

• Federal agencies with statutory authority. The Defense Department (10 U.S.C. 130i), DHS and the Justice Department (6 U.S.C. 124n), and the Energy Department (now 10 U.S.C. 6227, formerly 50 U.S.C. 2661).
• Certified state and local agencies, since December 2025. The SAFER SKIES Act, in the FY2026 defense authorization act (Pub. L. 119-60, signed 18 December 2025), extended 6 U.S.C. 124n to state, local, tribal and territorial law enforcement and correctional agencies. They must be trained and certified through the FBI’s National Counter-UAS Training Center, use only systems on the authorised list, follow privacy rules, and report any mitigation to the Justice Department and DHS within 48 hours. A Justice Department and DHS interim rule took effect on 1 July 2026. The state and local authority runs to 31 December 2031; the federal authority under 124n to 30 September 2031.
• Not private owners. Critical infrastructure owners, businesses, venues and airports have no mitigation authority. Bills to change that are pending in Congress; none has been enacted.

Jammers are generally illegal for anyone else to operate, market, sell or import, including on drone control frequencies (47 U.S.C. 302a(b) and 333). Mitigation without authority can also implicate the aircraft sabotage statute (18 U.S.C. 32), computer fraud law (18 U.S.C. 1030) and the aircraft piracy statute (49 U.S.C. 46502), among others.

The laws detection can touch

• Surveillance laws. Radio-frequency systems that monitor the link between a drone and its controller may implicate the Pen/Trap Statute (18 U.S.C. 3121–3127) and the Wiretap Act (18 U.S.C. 2510 and following). Radar, camera and acoustic systems are less likely to raise these concerns.
• Spectrum rules. Systems that transmit, such as radar, need FCC authorisation and, where required, a licence.
• Aviation rules. At airports, the FAA expects coordination, an approved response plan for Part 139 airports, and Part 77 notice before installing detection equipment. The FAA says it cannot confirm the legality of any detection system.
• State and local law. The 2020 advisory does not cover state law or civil liability. Ask your counsel.

Remote ID helps. Since 16 September 2023 most registered drones must broadcast Remote ID (14 CFR Part 89), and the broadcast can be received by most personal wireless devices in range. Linking a broadcast to the owner’s registration is limited to the FAA and, on request, to authorised law enforcement. CISA notes that Remote ID has a shorter range, that drones under 250 grams are often exempt, and that broadcasts can be spoofed.

Questions to ask a vendor

1. How does it detect?Which sensors, and does any part capture, decode or record the contents or addressing of radio communications?
2. Has counsel reviewed it?Ask for the vendor’s legal analysis against the 2020 advisory, then have your own counsel read it. A vendor’s say-so is not enough.
3. Does it transmit?If so, show the FCC equipment authorisation and any licence needed.
4. Can it mitigate?If the product can jam, spoof or take control, who is it sold to, and is that function disabled for buyers without authority?
5. What does it actually detect?Ranges, small drones, drones without Remote ID, false alarms, and performance at your site, in your conditions.
6. What happens on an alert?Who is called, what you hand to law enforcement, and how it fits your security plan.
7. What data does it keep?Where it is stored, for how long, who can see it, and whether the product or its components are on the FCC Covered List.

Vendor-neutral. BSJ Ventures does not sell, rank or recommend drone detection or mitigation products and has no relationship with any maker. This guide is a reading of the public law and agency guidance.

Questions people ask

Is drone detection legal for private companies?

Some detection can be, but it depends on how the system works. The 2020 interagency advisory from the Justice Department, DHS, the FAA and the FCC says radio-frequency systems that monitor drone communications may implicate federal surveillance laws such as the Pen/Trap Statute and the Wiretap Act, while radar, camera and acoustic systems are less likely to. It advises getting legal counsel before buying.

Can a business jam or take down a drone?

No. Mitigation such as jamming, spoofing, taking control or downing a drone is limited to federal agencies with statutory authority and, since the SAFER SKIES Act of December 2025, to trained and certified state, local, tribal and territorial law enforcement and correctional agencies using authorised systems. Private owners, including critical infrastructure, have no mitigation authority.

Can local police take down drones now?

Since the SAFER SKIES Act in the FY2026 defense authorization act (signed 18 December 2025), state, local, tribal and territorial law enforcement and correctional agencies may mitigate drones under 6 U.S.C. 124n, but only after training and certification through the FBI's National Counter-UAS Training Center, using authorised systems, and reporting each mitigation within 48 hours. The implementing interim rule took effect on 1 July 2026.

Does Remote ID let me identify a drone pilot?

Remote ID broadcasts can be received by most personal wireless devices in range, but linking a broadcast to the owner's registration is limited to the FAA and, on request, to authorised law enforcement and national security personnel.

Does BSJ sell drone detection?

No. BSJ Ventures does not sell, rank or recommend drone detection or mitigation products and has no relationship with any maker.

Primary sources

• DOJ, DHS, FAA and FCC, Advisory on the Application of Federal Laws to the Acquisition and Use of Technology to Detect and Mitigate Unmanned Aircraft Systems, 17 August 2020.
• Pub. L. 119-60, FY2026 National Defense Authorization Act, Division H, Title LXXXVI (SAFER SKIES Act) and sections 1707, 3111, signed 18 December 2025.
• DOJ and DHS interim final rule on state, local, tribal and territorial counter-UAS authority, 91 FR 41466, 6 July 2026, effective 1 July 2026.
• FCC, Jammer Enforcement, updated 16 September 2026.
• FAA, UAS Detection and Mitigation at Airports, updated 23 June 2025.
• 14 CFR Part 89, Remote Identification of Unmanned Aircraft, eCFR current as of 8 October 2026.
• CISA, UAS Detection Technology Guidance for Critical Infrastructure, November 2025.

General information, not legal advice. BSJ Ventures publishes methods; it never publishes clients, cases or verdicts, and it claims no relationship with any agency or maker named here.

← All guides and checks