Elderly · Proven
Silent Bathroom Event Guardian
If someone falls in the bathroom, help gets called — no camera needed.
Demonstrated on real public research data.
How it works
A fall is a fast movement followed by stillness, and both change how WiFi waves bounce around the home. The waves pass through the bathroom wall, so nothing has to be installed in the room itself. If someone goes in, goes still, and does not come out, the system raises the alarm.
In the physics: A fall produces a high-magnitude broadband Doppler transient (rapid limb/torso velocity >2 m/s) followed by near-zero motion energy except the 0.1-0.5Hz breathing band. Through-wall sensing works because 2.4/5GHz penetrates drywall (proven AUC 0.69 LOS/NLOS discrimination, fall AUC 0.8); RTI places the still body inside the bathroom compartment even with no sensor in the room.
See it work
This is real pipeline output for Elderly, replayed. The exact reading depends on your room.
Go deeper
How the field becomes an answer
How we prove it
Fall detection already class-A on public data; EHUNAM and ESP32-wall for through-wall configuration; own-hardware validation with staged falls (mannequin + actor protocol) behind a real bathroom wall.
Who it is for
For home-care agencies and adult children (private-pay): 'The bathroom is where they fall and where cameras can never go — we watch it through the wall, seeing physics, not pixels.'
runtime Runs today in LatentField 2.0 as fall_detect
The matching solution
Complete first-room estimateAging-in-Place Guardian3 nodes · ~$130 parts · 60 min Request kit, subscribe, or set up →Compatible DIY hardware options
15 min · beginner
60 min · intermediate