
A pair of pods that quietly tell one person you're okay. One ring of light — no map, no history, no account.
One ring of light. Silent, and readable at a glance.
Private alerts on the skin. No screen, no sound.
Up to 10 days of runtime on a single charge.
Rain, sweat and river crossings. Sealed shut.
A private way to prove you're okay without being watched.

All good. Continuing as expected.
Something's off. Checking in.
Strong evidence of trouble.
Out of range. Not an alert.
A small, weatherproof pod that lives on a strap, a collar, or a pocket. No screen, no buttons to fumble — just a quiet ring of light.
A 6-axis IMU and PPG sensor read movement and rhythm continuously. Nothing leaves the device to be processed — it's inferred right here.
An on-device model turns raw signal into one of four states — Safe, Uncertain, Distress, Link Lost — and nothing more specific ever exists.
Secure element for keys, encrypted low-power BLE for the handoff, a silent haptic engine, and up to 10 days on a single charge.


Everything the diagram labels, in text you can actually read — and that a screen reader can too.
A 6-axis IMU and a PPG sensor, sampling continuously.
Stores the encryption keys. No data out.
Silent, glanceable state indicator.
Up to 10 days on a single charge.
One-time pairing. Unpair anytime. No account.
The model runs locally to determine the abstract state.
Ultra-low-power BLE. Encrypted abstract state only.
Private, silent alerts. No screen. No sound.
Continuous link, expected pattern. All good.
Degraded link, ambiguous signal. Checking in.
Strong evidence of an abnormal pattern.
Out of range — not treated as danger.

No tower, no satellite, no check-in to remember. Just a ring on a strap, twenty metres back, saying: still here.
Every design decision optimizes for consent, not surveillance.
Either side can leave, anytime. No explanation required.
Live-only state, nothing to replay as "evidence".
No monitor, no monitored. Just two equals.
Even under pressure from one side. We never share it.
The presence device that can't be turned into a leash.
Join thousands who trust Pulse to keep them connected and protected.
