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Acoustic drone tracking

Every dronemakes a sound.

We're building sensors that hear it, and place the drone in 3D.

Host a pilotHow it works

Backed by

At night, a drone carrying a taped package crosses the razor wire on top of a prison fence.

Contraband is arriving by drone.

Federal prisons reported 479 drone incursions and sightings in 2024, up from 23 in 2018.1 In June 2026, federal prosecutors charged 12 people over at least 38 drone drops into 10 federal prisons.2

  1. FBI and DOJ testimony to the Senate Judiciary Committee (opens in a new tab)
  2. U.S. Attorney's Office, Middle District of Georgia, June 2026 (opens in a new tab)
Why we start with prisons

How it works.

  1. Listen

    Sensors on existing posts pick up propeller noise, day or night.

  2. Locate

    Bearings from several posts meet, placing the drone in 3D.

  3. Respond

    Your team sees the track and where the drone stopped.

The system in detail

On the posts you already have.

Straps to an existing light pole. No trenching, no new towers.

  • Strapped to the post

    Stainless bands. No new mast.

  • Microphone rings

    Top and bottom, all the way around.

  • Part of a network

    Each post takes a bearing; together they make a track.

See the product
Aetherus sensor package secured to a light pole with stainless bands, with microphone rings at the top and bottom.

Pilots in progress at 3 facilities, with 4 more planned.

A corrections facility at night, seen from above: a floodlit double fence with razor wire around low housing units and a yard, with sensors on some of the perimeter light poles.
Corrections
An open-air event ground at night, seen from above: a crowd on a lawn in front of a lit stage, ringed by trees and light poles, some of them carrying sensors.
Public venues

Host a pilot.

We install the sensors, run them with your team and share what we learn. Free for the host.

Host a pilotTalk to us first