Stillsky
Find the drones radio detectors miss, and hand over the proof.
Small drones now carry drugs and phones over prison walls at night, and many fly a pre-programmed route with the radio switched off, which radio-only detectors cannot hear. Stillsky is pole-mounted sensor posts plus tracking software that catch those flights by sound, sight and Remote ID, mark where the package landed, and build the evidence pack. Built first for prisons and jails, ready for any site with a fence.
How it works
A mesh of cheap posts that agree on where a drone is.
01
Hear, see and read
Each Watchpost carries cameras, a microphone array, a Remote ID receiver (the signal drones broadcast by law) and a radio receiver that never reads message content. A drone flying a pre-programmed route with its radio off still makes noise and still shows up on camera.
02
Fuse and track
Pathfinder, the tracking engine, combines every post's readings into one live track per drone, tells drones from birds, and triangulates from bearings to estimate where the aircraft is and where its pilot is standing.
03
Mark the drop, keep the proof
When a drone slows and releases something, Pathfinder estimates where the package landed so staff can recover it, and writes a time-stamped, tamper-evident record in open formats investigators can import.
What exists today
Software working, hardware on the bench.
Pathfinder tracking engine
Fusion, multi-target tracking, drone-or-bird classification, pilot and drop-zone estimation, audit log. Covered by automated tests.
Operator console
The control-room screen: live map, tracks, alerts, drop markers and the evidence timeline.
Watchpost v0
A two-node field kit on single-board computers, with 3D-printable enclosure parts designed in CAD.
Node software
Runs on each post and streams detections into Pathfinder. Tested end to end with simulated nodes.
Stillsky is pre-launch. Results so far come from simulation, not field trials, and no real drone has been tracked yet. We will publish field numbers when we have them.
The full product lives at stillsky.io.
Product detail, who can buy what, and pilot requests are all on the Stillsky site.