Last reviewed October 2026. This guide is general information, not medical or care advice.
Wearing and maintaining a necklace alarm
A necklace alarm only helps when it is worn. Comfort, the lanyard or clasp, charging, and the daily routine matter more than a long feature list. Try the format before committing to a monitoring term.
A GPS necklace can be removed by someone who is confused or does not want to be tracked. Discuss consent, charging, and a backup plan with the family and care team.
Check the necklace for wear, confirm the battery routine, and make sure the wearer can put it on without help. If the wearer finds the necklace uncomfortable, test a necklace or wrist option before giving up on the response plan.
- Confirm the necklace is comfortable enough for all-day wear.
- Check whether it can be worn in the shower or bath.
- Ask how the battery is charged and what warning is given.
- Test the breakaway or clasp with the wearer.
- Make sure the necklace does not interfere with hearing aids or clothing.
A tracker is not a personal alarm
A GPS tracker reports a location. A personal alarm lets the wearer call a monitoring centre or family contact. Some devices combine both, but the functions solve different problems. A tracker can help you find someone who has walked away from home; an alarm can help someone who has fallen and cannot get up.
If the main concern is getting help after an emergency, start with a personal alarm. If the main concern is finding someone who may become disoriented, a tracker may be appropriate. Many families need a plan that includes both, plus a search procedure for the people involved.
A necklace format only helps when it stays around the neck. Before comparing technical features, check whether the necklace is light enough, the cord is comfortable, and the clasp can be managed by the person wearing it. A device that needs help to put on is less likely to be worn daily.
Consent, capacity, and dignity
Tracking a person without their knowledge can damage trust and may be inappropriate. Where someone has capacity, explain what the device does, who can see the location, and when it will be used. If memory or decision-making is changing, involve a clinician or care professional and follow local safeguarding guidance.
A tracker should be presented as a shared safety tool, not a surveillance device. Agree in advance who may check the location, how often, and what they should do with the information. Put the agreement in writing if several family members are involved.
The clasp deserves particular attention. Look for a fastening the wearer can use without looking in a mirror, and check whether the cord can be adjusted or replaced. If the wearer has limited hand strength, a different format may be more practical.
Battery life and coverage
A tracker is only useful while it has power and a signal. Check the realistic battery life with location updates enabled, not just the standby figure. Ask how long it takes to charge, whether the wearer can manage the charger, and what alert is sent when the battery is low.
Mobile coverage varies by network and by location. A tracker that works in a city centre may struggle in a rural area or inside a large building. Ask the provider which network the device uses and test it in the places the person visits.
Someone who removes jewellery for sleep, bathing, or dressing needs a clear routine for putting the alarm back on. Pair it with an existing habit, such as getting dressed or making breakfast, so the necklace does not stay on the bedside table.
- Check the battery life with live tracking switched on.
- Confirm the network and coverage at home and on regular routes.
- Ask whether the device sends a low-battery alert.
- Check whether location history is available and who can see it.
Geofences and alerts
Many trackers can send an alert when the wearer leaves a defined area, sometimes called a geofence. This can be useful for a person who walks to a regular shop or day centre, but it can also create false alerts if the boundary is too tight or the location is inaccurate.
Set the boundary with the person and test it before relying on it. Decide who receives the alert, what they should do first, and when to call the police or a local missing-person service. A geofence is a prompt to check, not a guarantee that someone is safe.
A necklace alarm can be discreet, but discretion should not come at the cost of the button. Check that the wearer can find and press the alert without fumbling, and that the necklace does not swing away from the body when they move.
Questions to ask before buying
Ask whether the device is a tracker, an alarm, or both. Confirm the total monthly cost, the contract length, and what happens if the device is lost or damaged. Check the returns policy and whether the location data can be exported or deleted.
Ask how the provider handles a missing person situation. Do they contact emergency services, or does the family do that? What support do they offer if the tracker fails? A clear answer is more important than a long feature list.
- Does the device support two-way calling or only location tracking?
- Is the tracker waterproof and comfortable enough to wear every day?
- Who owns the location data, and how long is it retained?
- What happens if the wearer enters an area with no signal?
- Is there a plan for who searches and who calls emergency services?
Questions people ask
Can a GPS tracker replace a personal alarm?
No. A tracker shows location; it does not necessarily let the wearer call for help. Some devices combine both, but you should confirm the alarm function and the response plan separately.
Is it legal to track a person with dementia?
The legal and ethical position depends on the person's capacity, consent, and the arrangements in place. Seek advice from a clinician, social worker, or local safeguarding service before using a tracker without consent.
How accurate is GPS tracking?
Accuracy varies with the device, the environment, and the network. Urban buildings, rural areas, and indoor locations can reduce accuracy. Test the device in the places the person actually goes.
What should I do if the tracker shows someone is missing?
Follow your agreed plan: try to contact the person, check known places, and call the police or local missing-person service when appropriate. Do not wait for the tracker to be perfectly accurate before raising an alarm.
Sources and further reading
These sources were used to check the general guidance in this guide. They do not imply endorsement of any product.