Signal Shield · the towers, the chips, the carriers, the regulator

Put the infrastructure on notice before the towers go live.

The 6G standard under development includes integrated sensing and communication, and the industry's own documents list human sensing among its use cases. Wi-Fi sensing patents granted in 2025 already detect people's presence and motion from ordinary network signals. Signal Shield delivers formal written notice, in your name, to the 33 entities behind that infrastructure: the equipment makers, the carriers, the tower owners, the DARPA N3 teams, the university boards that approve current brain-sensing studies, and the FCC.

Certified mailProof of service30-day refundFCC co-recipient
33
entities receive your notice
Source: This site
115,000+
US cell towers owned by Signal Shield recipients
Source: Company filings
6
teams funded under DARPA N3
Source: DARPA
$100M+
N3 program funding over four years
Source: DARPA
50 ms
N3 read and write latency target
Source: DARPA
6
sensing patents cited on this page
Source: Google Patents
In the industry's own words

Three documents that describe sensing people through the air.

The 6G white paper

Huawei's 6G white paper lists "augmented human sensing" as a target use case for integrated sensing and communication. Ericsson, Nokia, Qualcomm, Intel, MediaTek and Samsung publish research toward the same standard.

The standards report

ETSI GR ISC 001, published by the ETSI industry specification group in April 2025, sets out the 6G sensing use cases and deployment scenarios, including human sensing. IEEE 802.11bf does the same for Wi-Fi.

The DARPA program

N3 funded 6 teams in May 2019, $100M+ over four years, to read and write the brain without surgery at a 50 ms target. Reported awards include $19.48M and $18M, and a $9.8M Phase II contract to Rice University.

The spectrum is licensed. The towers are built. The use cases are published.

Put every layer of it on notice before it switches on.

The 33

Five layers, from the chips to the regulator.

The 6 DARPA N3 contractors and 7 university review boards share a layer because both decide who may run brain-sensing experiments on people today. Samsung is served once, through Brain Shield, for both scopes.

Layer 1. 6G equipment manufacturers

The chip and radio makers contributing to the 6G integrated sensing and communication (ISAC) standard, whose published research includes human sensing as a use case.
7 entities
Huawei Technologies USA Ericsson Nokia of America Qualcomm Intel MediaTek USA ZTE (USA)

Layer 2. Telecom carriers and internet service providers

The operators expected to deploy 6G radio equipment and carry the resulting data.
7 entities
AT&T T-Mobile US Verizon Communications Array Digital Infrastructure, Inc. EchoStar Comcast Charter Communications

Layer 3. Cell tower and fiber infrastructure owners

The companies that own the physical structures 6G sensing equipment would be mounted on.
5 entities
American Tower Crown Castle SBA Communications Vertical Bridge Uniti Group

Layer 4. DARPA N3 contractors and university research IRBs

The six teams funded under the DARPA Next-Generation Non-Surgical Neurotechnology program, and the university review boards that authorize current human-subjects brain research.
13 entities
Battelle Memorial Institute Teledyne Technologies SRI International Johns Hopkins University Applied Physics Laboratory Rice University (MOANA project) Carnegie Mellon University Massachusetts Institute of Technology (COUHES) New Northwestern University (IRB) New Columbia University, CUIMC (HRPO) New Columbia University, Morningside (HRPO) New Stanford University (HARCO IRB) New Brown University (HRPP) New UC San Francisco (HRPP) New

Layer 5. Federal regulator

The agency that licenses every radio frequency the other Signal Shield recipients use.
1 entity
Federal Communications Commission
Patents cited on this page

6 documents. Titles quoted as filed.

The notice cites the full appendix. These are the documents that describe sensing a person's body or brain without contact. Granted, published, or expired is stated for each.

NumberStatusDateTitle as filedAssigneeWhat the document describes
US20240065594 published application Feb. 2024 Non-invasive mind reading using coherent radio waves Published US application The application describes passing coherent radio waves through brain tissue, where ion movement in neural channels modulates the waves, and a detector recovers the modulated signal without contact.
US3951134A expired patent 1976 Apparatus and method for remotely monitoring and altering brain waves Granted US patent (expired) The patent describes transmitting electromagnetic signals to the brain at a distance, receiving the signal the brain modulates, and decoding it remotely.
US6011991A expired patent Jan. 2000 Communication system and method including brain wave analysis and/or use of brain activity Granted US patent (filed 1998, expired) The patent describes decoding brain-wave signals transmitted by satellite, with the subject and the decoder in different locations.
US12452722B2 granted patent Oct. 21, 2025 Systems and methods for Wi-Fi sensing Cognitive Systems Corp. Wi-Fi devices take sensing measurements from the signals exchanged between ordinary network equipment to detect motion and presence in a space.
US12216190B2 granted patent Feb. 4, 2025 Method, apparatus, and system for wireless sensing based on linkwise motion statistics Origin Research Wireless Inc. Detects the motion of people in a venue from how their movement disturbs the multipath radio channel between wireless devices.
US5507291A expired patent 1996 Method and an associated apparatus for remotely determining information as to person’s emotional state Granted US patent (expired) Reads pulse, respiration and pupil size at a distance and infers emotional state from them. Not a neural signal.
Signal Shield · notice delivery service
$49
One-time payment. No subscription.
  • 33 formal written notices in your name, including the FCC
  • The remote-sensing patent appendix cited by number
  • Certified mail to every registered agent and review board
  • Master index, proof of service, notarized affidavit
  • Permanent delivery archive
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Brain Shield
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49 companies building brain-reading hardware and software. Read the Brain Shield page.

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Signal Shield refuses consent to sensing technology that is specified, patented and funded, and that carriers have not deployed. It makes no claim that any recipient is sensing you now. Not legal advice. Ediflo.AI, LLC is not a law firm.