GPS personal alarm
A GPS personal alarm is a duress device that transmits the wearer's live location with every alert, so responders go to the person rather than an address on file.
Location is what turns an alarm into a response. A GPS personal alarm streams the wearer's position continuously during an incident, so an operator follows a moving worker in real time - in a vehicle, on foot, between properties - instead of dispatching to a stale address.
GPS alone has two well-known gaps: indoors and blackspots. Indoors, buildings blur GPS to the street level, which is why serious systems add BLE beacon positioning to resolve floor and room. In coverage blackspots, the device holds and reports the last known location, and retries across 4G, 5G, Wi-Fi and SMS until a channel returns.
Privacy design matters in a workplace tool: location should stream during an alert and check-in events, not track workers continuously by default. Ask any vendor to explain exactly when location is visible and to whom.