Legal — Limitations
Limitations — plain language
This page states what Guardian cannot do, in plain language. It is not a legal disclaimer written to protect us — it is a factual statement written to help you make an informed decision about whether Guardian is right for your situation.
This is a demonstration build
The current version of Guardian has no real emergency-service connection. Alerts sent during simulation or testing do not reach any monitoring service, emergency dispatcher, or real person outside your configured circle. Do not rely on this build in a real emergency.
Detection can miss real events
Guardian uses a consumer smartwatch's accelerometer and optical heart-rate sensor. These sensors were not designed for medical monitoring. Guardian's detection algorithms look for patterns, not certainties.
A real fall, cardiac event, or other emergency can occur without Guardian detecting it. This can happen because: the wearer is not wearing the device; the device battery has died; the fall did not produce the expected acceleration signature; the heart-rate reading was inaccurate; or the event type is one Guardian does not monitor (stroke, seizure, loss of consciousness without movement change, etc.).
Detection can trigger on non-events
Guardian can send an alert when nothing is wrong. Vigorous exercise, sitting down heavily, dropping the device, or an inaccurate heart-rate reading can all trigger the escalation process. The S2 check-in prompt is designed to catch these, but if the wearer does not respond to the prompt, a false alert will be sent to the circle. Repeated false alerts cause alarm fatigue, which can lead circle members to respond more slowly to real events.
Guardian is not a substitute for calling emergency services
Guardian cannot call emergency services. It cannot speak to a dispatcher. It cannot confirm that help has been dispatched. It cannot guarantee that anyone in the circle will respond.
If you believe someone is in danger, call emergency services (999 / 911 / 112) immediately. Do not wait for Guardian to escalate.
Guardian is not a medical device
Guardian is a consumer safety application. It is not CE-marked, FDA-cleared, or UKCA-marked as a medical device. Its outputs should not be used to make clinical decisions. Heart-rate readings from a consumer smartwatch are not equivalent to ECG readings. Fall detection events are not a clinical diagnosis.
Staffed monitoring does not guarantee a response
On the Professional plan, a staffed monitoring team reviews incidents and attempts to reach the wearer and circle by phone. This is not a guarantee that anyone will be reached, that emergency services will be contacted, or that help will arrive. The monitoring team does not contact emergency services directly — that decision remains with the circle.
Connectivity and device dependency
Guardian requires a charged smartwatch, a working Bluetooth connection to a phone, and an active internet connection. If any of these fail, monitoring stops and alerts may not be delivered. Guardian does not have a cellular backup or a dedicated hardware unit.