Private by physics. Careful by design.
A floor sensor cannot see a face or hear a word. On top of that, Happy Steps keeps the signal at home and sends only what is needed to care.
見ない、聞かない、送りすぎない。
Nothing to see or hear
A geophone measures floor motion only. There is no image, no audio, and no way to rebuild speech from it.
The signal stays home
All signal processing runs on the device in the home. Raw vibration is never uploaded.
Only small numbers leave
About 300 bytes per walk: time, steps, pace, steadiness, and “resident” or “unknown”. No names in the event.
Exactly this, and nothing more.
- Today’s walk events, in the open
footstep-event/v1format - A 14-day summary of the resident’s own usual days
- How the family calls her (for example “お母さん”), chosen by the family
- A system instruction that forbids diagnosis and asks for kind, simple words
| Data | Where it lives |
|---|---|
| Raw floor vibration | Home device only |
| Footstep fingerprint of the resident | Home device only |
| Walk events (numbers) | Sent to Gemini API |
| Family note and alerts | Family’s chosen app |
| Images, audio, location | Never collected |
Care that knows its limits.
Consent first
The person living in the home agrees to the sensor, can pause it, and can ask for it to be removed at any time. The family sees summaries, not a live feed.
No diagnosis
Happy Steps describes changes (“slower than usual”) and suggests human actions (“give her a call”). It never names a disease or gives medical advice.
A human decides
Alerts ask a person to check. Nothing happens automatically to the resident. Emergency services are a human choice.
Kind words, always
Messages spoken to the resident are short and cheerful. Worry goes to the family, not to her.
See a real footstep become a kind word.
The live demo runs real floor recordings through the full pipeline and calls Gemini in your browser.