Watched over.
Never watched.
Know your parent is okay — that they got up, moved through their day, and slept and breathed easy — with a sensor that has no camera, no microphone, and can prove it never watched them. Peace of mind that doesn't cost them their dignity.
Local to your Home Assistant · every reading signed & verifiable · no telemetry: its one trip online is a check for signed firmware updates, shortly after power-up and then daily.
To know they're safe, you have to surveil them. So you don't.
Every option asks you to trade a parent's dignity for your peace of mind — or trust a company with the inside of their home. So most families just… worry.
A camera in their home
A lens in a parent's living room or hallway is a betrayal they'll refuse — and it's footage that lives in a company's cloud, hackable and subpoenable.
✕ Rejected on dignityA panic button
Only works if they wear it and can press it. The moment that matters most — a fall, a bad night — is exactly when they can't.
✕ Useless when it countsA cloud "wellness" sensor
Better posture, but you still hand a company a live feed of your parent's most private hours — closed firmware, a server you can't inspect, terms that can change.
✕ Trust, unverifiableThe reassurance, not the surveillance
A quiet 60 GHz radar on the wall or nightstand reads presence, movement, and — at the bedside — breathing. It turns their day into a handful of calm, signed signals on your Home Assistant. No images. Ever.
- 7:14Up and about. Movement in the bedroom, then the kitchen.✓ signed · verified
- 9:40Active morning. Normal room-to-room activity.✓ signed · verified
- 14:05Resting. Settled in the armchair — breathing steady.✓ signed · verified
- —If a morning ever stays quiet, you get a gentle nudge to call — not an alarm, just a heads-up.
Don't trust us. Verify.
Privacy here isn't a policy you have to believe. It's the hardware and the math.
No camera, no microphone: the raw radar signal never leaves the sensor chip, and every presence reading is an Ed25519-signed entry in a tamper-evident chain you can check yourself. How It Works shows the check.
Open the Lab and run the actual firmware in your browser. Watch it emit a signed presence claim — and watch for a video frame that never comes, because the code to make one isn't there.
Run it yourself in the Lab →The only one that's both passive and provable
| Canary Sense · Wellbeing | Indoor camera | Panic button | Cloud radar | |
|---|---|---|---|---|
| Can it capture video of them? | Never — no camera exists | Yes, always | No | No |
| Works if they've fallen & can't act? | Yes — it's passive | If someone's watching | No — must be pressed | Yes |
| Does their data leave the home? | No — local to your HA | Yes — the cloud | Yes — the cloud | Yes — the cloud |
| Can you verify the privacy yourself? | Yes — signed, open, runnable | No | No | No — closed |
| Will a parent accept it? | It's dignified — no lens | Usually refused | If they'll wear it | Often |
Give someone you love a quiet guardian.
Canary Sense is a maker build: you print and flash it, or have one made for you. It isn't sold assembled. Try it in your browser first.
Honest by default: this is peace-of-mind wellbeing monitoring, not a medical device, and not a substitute for emergency services or in-person care. Breathing and heart readings are close-range and single-person by design. We'd rather tell you the edges than oversell the middle. If you want to know who stands behind that promise, meet Errer Labs and the thesis.