The short version: Wandering is one of the most dangerous parts of dementia. 6 in 10 people with dementia will wander, and up to half who are not found within 24 hours suffer serious injury or death. The plan has two layers: slow the exit with door alarms and locks, and locate fast with a real-time GPS wearable, which can cut find time from hours to minutes. A tracker supports supervision; it does not replace it.
Why wandering is a safety emergency
Wandering is not a harmless habit. It is the moment a person with dementia leaves a safe place and cannot find their way back, and the clock starts immediately.
The Alzheimer’s Association reports that 6 in 10 people living with dementia will wander at least once.1 Most are found close by, but the danger grows fast with time: up to half of those not located within 24 hours suffer serious injury or death.1 Hypothermia, dehydration, traffic, and falls are the real risks, and they all get worse the longer someone is out.
The takeaway is to plan before a first incident, not after. If your loved one has dementia, assume wandering is possible and build the layers below now.
This guide is part of our smart home for seniors work and the broader aging-in-place foundation.
Layer one: slow the exit
The first job is to know the moment a door opens and to buy yourself time to respond. This layer is mostly low-tech and inexpensive.
What to add: door and window exit alarms that chime when opened, motion sensors near exits for nighttime, and a lock placed high or low on the door, outside the normal line of sight, to slow an impulsive departure.4 For smart locks that also let a caregiver check and control entry remotely, see our smart locks guide.
Reduce the triggers too. Keep coats, shoes, and keys out of view, since seeing them can prompt a person to “head out.” Disguising or curtaining a door can lower the pull of an exit. Restlessness, or wanting to “go home” or “go to work,” often comes before wandering, so a predictable routine and daytime activity help.2
Layer two: locate fast
If someone does leave, the goal is to find them in minutes. This is where a GPS wearable earns its place.
Real-time GPS devices can cut the time to find a missing person with dementia from an average of several hours to under thirty minutes. In wandering, that time difference is the difference between a scare and a tragedy.
Types of locating devices
| Device | How it works | Best for |
|---|---|---|
| GPS smartwatch | Cellular real-time location, often with calling and fall detection | Someone who accepts a watch and charges it |
| GPS pendant or clip | Worn on a lanyard or clipped to clothing | Someone who will not wear a watch |
| Shoe or insole tracker | GPS built into footwear | Someone who removes jewelry and devices |
| Bluetooth tag (AirTag type) | Locates only when near other phones | A backup, not a primary wandering device |
What to prioritize: real-time location, a geofence alert that notifies you the moment the person leaves a set zone, all-day battery life, and simple wearability that does not look medical.2 A tag-style tracker helps only when other phones are nearby, so for true wandering safety choose a cellular GPS device. If fall risk is also a concern, our fall detection devices guide and medical alert systems with GPS overlap here.
Enroll in a locating program before you need it
Devices help you search. Enrollment programs bring in trained responders and a system, and they work best when set up in advance.
- MedicAlert with 24/7 Wandering Support, offered with the Alzheimer’s Association, provides an ID bracelet and a hotline that helps reunite a lost person with their family.3
- Project Lifesaver, run through many local sheriff and police departments, provides a trackable radio wristband and trained search teams.6
Keep a recent photo and a short medical summary on file and easy to grab, so responders can act the instant someone goes missing.
Dignity, consent, and privacy
A tracker raises a real question: are we protecting a person or watching them? Handle it with care rather than avoiding it.
Involve your loved one in the decision while they can still take part, choose the least intrusive device that does the job, and be open with the family about what it does. The goal is protection, not surveillance for its own sake, and it should sit alongside respect for independence for as long as that stays safe. For the broader question of connected-device data, see our smart home privacy guide.
A tracker is a supplement, not a replacement
Be honest about the limits. A GPS device does not stop someone from leaving, does not work with a dead battery, and can be taken off. It is one layer in a plan that still relies on supervision, a safe home, and a fast response.
If your loved one is missing: call 911 early, do not wait to search alone first. Tell them the person has dementia and may not respond to their name. Have the tracker app open, a recent photo ready, and a list of likely destinations, such as a former home or workplace. Most people are found within a mile and a half, often heading somewhere familiar.1
- Assume wandering is possible; plan before the first incident
- Alarm the exits and place locks out of the line of sight
- Choose a real-time cellular GPS wearable with geofence alerts
- Set and test a safe-zone geofence; build a daily charging habit
- Enroll in MedicAlert Wandering Support or Project Lifesaver now
- Write a response plan and call 911 early if someone goes missing
What’s next
- Smart home starting point: Set up voice-controlled lights
- Fall protection: Best fall detection devices
- Alerts with GPS: Best medical alert systems
- Control the doors: Best smart locks for seniors
- Data and consent: Smart home privacy for seniors
- Caregiver setup help: Caregiver tech setup
Citations
- Wandering. Alzheimer’s Association, retrieved August 13, 2026. alz.org wandering.
- Wandering and Alzheimer’s Disease. National Institute on Aging, U.S. National Institutes of Health, retrieved August 13, 2026. nia.nih.gov wandering.
- MedicAlert with 24/7 Wandering Support (Safety). Alzheimer’s Association, retrieved August 13, 2026. alz.org safety.
- Home Safety and Alzheimer’s Disease. National Institute on Aging, U.S. National Institutes of Health, retrieved August 13, 2026. nia.nih.gov home safety alzheimer’s.
- Caregiving for a Person with Alzheimer’s Disease or Dementia. Centers for Disease Control and Prevention, retrieved August 13, 2026. cdc.gov alzheimer caregiving.
- Project Lifesaver Program. Project Lifesaver International, retrieved August 13, 2026. projectlifesaver.org.