Camera-free RF privacy sensing

Room awareness without cameras.

RippleNode One is a small Wi-Fi signal sensor that helps RippleGuard notice room presence, movement, and protected-zone disturbance using local wireless pattern changes.

Try the demo app See the device

Experimental privacy monitor. Not a medical device. Not for diagnosis, treatment, safety-critical alerts, or health decisions.

RippleNode One

Router

Protected zone

No camera Designed for spaces where visual monitoring feels invasive.

Low cost Starts with commodity ESP32-class hardware and USB power.

Local first Streams room-signal summaries to your local RippleGuard app.

The device

A tiny node for one room or one protected area.

Place RippleNode One near a router, doorway, desk, cabinet, or other area you care about. When a person crosses the wireless path, the signal pattern changes. The app turns that change into simple privacy events.

PowerUSB-C, no battery in v1

RadioESP32 Wi-Fi RSSI first, CSI later

ControlsOne setup button, one status light

CasePlastic puck with clear antenna side

The app

RippleGuard turns signal changes into understandable room events.

Privacy Event Movement

Likely Zone Door 72%

3D probability map

Shows likely room zones from captured RF fingerprints.

Privacy event log

Ignores short noise and records sustained changes.

Installable demo

Open in Safari, add to Home Screen, and run full-screen.

Prototype path

Designed to move from bench prototype to pilot device.

01ESP32 dev board

Validate RF disturbance in real rooms.

02RippleNode One PCB

USB-C, status LED, setup button, antenna keepout.

03Pilot enclosure

Small plastic puck or rounded rectangle near router/doorway.

04Multi-node kit

Add better zone confidence with two to four nodes.

Try the working prototype now.

The demo runs locally and includes simulated mode, live bridge mode, zone calibration, event scoring, and a 3D room probability map.

Open RippleGuard demo