Lone worker safety: a man-down alarm someone can act on.Man-down alarms that nobody can act on in time?

For what drives the price of a lone worker system, see our RTLS cost guide.

UWB/BLE → indoor · GPS/LoRaWAN → remote & outdoor

What buyers care about.

Help that arrives with a place, not a phone number. Duty of care for lone workers fails when an SOS reaches a mailbox with no location. Buyers need duress, fall/tilt and immobility (man-down) alerts that open with who, where and how long, routed to a human who can act at 02:00.

Detection that works when the worker cannot press a button. Unconscious or trapped workers never complete a check-in. Configurable no-motion and orientation thresholds, with a pre-alert cancel window to cut false positives, matter as much as the panic button.

Coverage rigour. Indoor locating, yard GNSS and cellular/satellite dead zones each leave different blind spots. The programme must map where monitoring is guaranteed, where it degrades, and what procedure fills the gap, especially mines, tanks, substations and night-shift plant.

Escalation that is owned. Technology without a named on-call chain, acknowledgement SLA and rescue playbook becomes noise. Buyers care about who is paged, who acknowledges, and what happens if nobody answers.

Evidence for regulators and insurers. Time-stamped alert logs, response times and coverage maps support OSHA-style monitoring expectations and local lone-worker rules, and defend the organisation after an incident.

Where lone-worker programmes fail.

False-alarm fatigue. Aggressive immobility thresholds on seated or kneeling tasks flood the desk. Responders start ignoring alerts. Tune by role and zone, and require acknowledgement: do not “fix” noise by turning detection off.

Tag left in the locker. Wearables that are uncomfortable, non-ATEX where required, or not part of permit-to-work are abandoned. Pair devices with induction and gate checks, not hope.

Location without response. A beautiful map of a fallen worker is useless if the shift supervisor has no radio protocol and no second person nearby. Design the human system first; place locating under it.

Pilot on Wi-Fi only. Many industrial sites need UWB or private radio for reliable presence indoors, plus outdoor GNSS. Starting on consumer BLE in a metal plant proves the wrong thing.

How suppliers pitch this vs what to buy.

Industrial safety locating suppliers such as Litum, AiRISTA, WIPELOT and broader RTLS platforms (Sewio, Quuppa partners, Extronics hazardous-area tags) pitch UWB/BLE wearables with SOS, fall and man-down, heat maps and geofence alerts. Campus and workplace suites may offer panic and mustering without centimetre accuracy.

Buy the outcome stack: reliable detection modes for your tasks; location accuracy matched to rescue (room/zone vs metre); an escalation workflow with acknowledgement and audit; coverage survey before go-live; and the same badge layer reusable for mustering or zone access where it reduces equipment. TRACIO stays independent (we do not sell wearables or safety SKUs) and advise which product stack fits the duty-of-care model you can actually staff.

Most lone worker programmes need two things that are often bought separately: a device that raises the alarm and says where the person is, and someone who answers it at any hour.

• Indoor sites. Plants, warehouses, hospitals and data centres: UWB or BLE RTLS badges give the responder a room or metre-level location, and the same badge can also run mustering and zone access.
• Outdoor and remote work. Utilities, field service, pipelines, agriculture and forestry: connected devices on LTE-M or cellular with GPS, plus satellite where there is no coverage.
• Detection modes. SOS or duress button, fall and man-down, no-motion, missed check-in timers and, on some devices, gas detection for confined spaces. A short pre-alarm lets the worker cancel a false alarm.
• Monitoring and escalation. Your own control room or security team, or a 24/7 alarm receiving centre (ARC). In the UK, BS 8484:2022 sets the standard for lone worker services, including connection to the ARC within 30 seconds, and ARCs work to BS EN 50518 with a direct police escalation route.
• Privacy and works councils. Location only on alarm or during shifts, clear retention rules, and agreement with works councils in countries such as Germany and the Netherlands before rollout.

The legal duty is similar almost everywhere even when the wording differs. UK employers follow HSE guidance on lone working, several Canadian provinces have specific working-alone rules, and in the US there is no dedicated OSHA lone worker standard, but the General Duty Clause still applies.

Connected safety devices from suppliers such as Blackline Safety, SoloProtect, Peoplesafe and Twig sit alongside RTLS platforms such as Sewio, Litum and AiRISTA. Which stack fits depends mostly on whether the person is inside your walls, and who will answer the alarm at 02:00.

Room attendants, night managers and security staff often work alone behind closed doors. A duress button only helps if the responder knows which floor and which room to go to.

• Room-level location. BLE beacons in corridors and rooms, so the alert gives the floor and room, not just the building.
• Discreet devices. Wearable or card-style buttons that do not depend on staff mobile phones or signal in stairwells and back-of-house.
• A clear escalation path. Alerts routed to security or the duty manager, with a named responder on nights.
• Privacy. Location only on alarm, so the system is not used to monitor room-cleaning times.

Several US jurisdictions require hotels to give staff who work alone in guest rooms a panic or safety device, for example Illinois (Hotel and Casino Employee Safety Act, 820 ILCS 325/5-10) and New Jersey (panic device law, P.L. 2019, c.123, hotels with 100+ guest rooms); in the UK the general lone-working duty applies. The same beacons can later support wayfinding or asset tracking, so decide that at design, not after they are fitted.