The measure of how close a location point is to the true location. A device may tout “accuracy of 7 feet,” for example.

Automatic notifications. These can include alerts about the location of a person with Alzheimer’s, the battery life on the person’s location device, lack of movement by the person with Alzheimer’s and more. With Comfort Zone, you can receive alerts about the location of a person with Alzheimer’s, the battery life on the person’s location device, lost network connections, zone alerts and more.

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Battery Checks
Comfort Zone periodically checks the battery life of a location device, and then alerts the person with Alzheimer’s or a family member if the battery is low.

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CDMA (Code Division Multiple Access)/GSM (Global System for Mobile Communication)
CDMA and GSM are wireless communication technology using global networks for transmitting voice and data. Major U.S. cellular carriers use CDMA or GSM technology.

Cell/Cellular Towers
A cell site is a tower, or other elevated structure, that has antennas, transmitters and other electronic communications equipment mounted on top to create a cell in a cellular network.

Constant Tracking Sessions - "Follow Me"
Constant Tracking is one of the location options in Comfort Zone. It is triggered with the “Follow” button and provides a 60-minute tracking session with location data transmitted every two minutes. This feature allows family members to follow the movements of a person with Alzheimer’s and see the location as points on a map display accessed via the Comfort Zone application.

Continuous Tracking or Breadcrumbing
Breadcrumbing refers to tracking a person with a GPS device and recording their location at specified intervals. The locations are presented on a GPS display as a "breadcrumb trail" of position markers. Some Comfort Zone plans offer breadcrumbing with location data transmitted every 15 or 30 minutes, depending on the plan.

Current Location — "Find Me"
A Comfort Zone feature that provides information on the indoor or outdoor location of a person with Alzheimer’s. Family members see the location as a point on a map display and access the map via the Comfort Zone application.

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A term used to describe what happens when the satellite signals bounce off surfaces like water, tree cover or buildings. Drift interferes with the device’s ability to pinpoint its location, and that leads to less accurate location management.

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Emergency Health Record
An electronic file of a person’s emergency health information, usually including diagnoses, contact information, medication and recent health care information. This information should be stored in a secure database, accessible only by approved account representatives and emergency response personnel. With Comfort Zone, the monitoring center will maintain this information, updated by the family, so that it can be shared with emergency responders in the event of a health emergency.

Emergency-Only Services
Emergency-only services refers to a location management service or system that is intend to locate the person with the disease in an emergency. When the person with the disease is missing, the system is activated by calling the 24-hour emergency monitoring center. The response professionals at the monitoring center will be able to locate the person using a mapping service. This more affordable service works best for people who are not comfortable using the Internet.

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Fall Management
Some devices are programmed to recognize if the person with Alzheimer’s has fallen.

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GPS is a global navigation system that depends on 24 or more satellites orbiting the earth to provide positioning and navigation information. To pinpoint a location using GPS, a tracking device must be able to “see” three or more GPS satellites at the same time.

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Impaired Location
Another way to refer to tracking a person indoors.

Indoor Location
The approximate location of a person when inside a building or home. The location can be obtained when using a device capable of acquiring a network-assisted location or one that uses A-GPS.

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Line of Sight (to the satellite or sky)
For GPS to work, the GPS systems needs to be in contact with at least three of the 24 satellites that are orbiting the earth reporting back on location. In order to see three satellites, the GPS device needs to have a clear path to the sky or satellite.

Location History
The tracking of a person’s movements over a period of time, charted as points on a map.

Location Verification
The rate at which a mapping application communicates with the device to verify that device is capturing location data and communicating with the network. Location verification is done a set number of times throughout the day, with the number of times varying by application and/or plan.

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Map Display
A graphic representation of a geographic area and its features. Comfort Zone users can choose to manage a person’s location with tracking on a map display.

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The act of determining the course or heading of movement. The movement may be of a plane, ship, automobile or person traveling on foot or in a vehicle.

Network Assisted GPS/A-GPS
A-GPS technology works in conjunction with GPS by using cell towers to triangulate locations.

Network Capacity
The amount of traffic that a network can handle at any given time. This includes the number of simultaneous voice calls and maximum data speeds. Capacity varies by area.

Network Checks
Some devices are programmed to periodically run checks to ensure that the device is connected to its network.

Network Coverage
The geographical area covered by the network of a service provider. Within this area, the phone or wireless device will be able to complete a call or send and receive data using the carrier's network or a partner network.

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Outdoor Location
The approximate location of a person when outside.

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Panic button
Some devices come with a panic button that will send an emergency signal when pressed.

An exact, unique location based on a geographic coordinate system.

Position Fix
The GPS receiver’s computed-position coordinates.

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Return Policy
Manufacturers offer varying return policies — some stricter than others. Before purchasing a device, make sure the return policy has the flexibility to meet your needs. If you find you need to upgrade the device, or the person with Alzheimer’s is uncomfortable with the particular device your purchased and the manufacturer has a strict return policy, you may be forced to keep a device you can’t use.

Radio Frequency Identification (RFID) refers to small electronic devices that use an antenna and radio waves and signals to track a person.

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Short Messaging Service (SMS), sometimes called text messaging, allows users to send and receive personal text messages directly to and between mobile phones. Each message can be up to 160 characters long (when using the default character set) and can be sent to and from users of different operator networks. All mobile phones support SMS.

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24x7 Emergency Response
Comfort Zone features a 24-hour emergency monitoring center that can help manage a person’s location and alert local first responders in the case of wandering or other emergencies.

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User Interface
The way in which information is exchanged between the GPS receiver and the user. This takes place through a screen display and/or buttons on the unit. User Interfaces that are easier to use than others are referred to as “more user-friendly”.

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Voice Assistance
Some devices are equipped with two-way communication capabilities. Meaning, the person wearing the device can actually talk to someone in another location via the device.

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Web-Monitoring Site
Comfort Zone allows users to manage a person’s location via the Internet. Family members log in to the secure Comfort Zone Web site and then view the current location or the location history of the person with Alzheimer’s on a map display.

WiFi (pronounced ‘why-fie’) stands for wireless fidelity and is a wireless networking technology. It allows a wireless connection to the Internet via wireless router.

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ZigBee Standard
The ZigBee Standard was adopted by the ZigBee Alliance, an association of companies working together to enable reliable, cost-effective, low-power, wirelessly networked, monitoring and control products based on an open global standard.

Zone Management or Geofencing
Geofence is a virtual perimeter on a geographic area using a location-based service. When the geofencing device enters or exits the area, a notification is generated. The notification can contain information about the location of the device and can be sent to a mobile hone or e-mail account.

Comfort Zone allows users to set up zones in which the person with Alzheimer’s can safely and confidently travel within. The zone might encompass a person’s house and yard, or a wide geographic area around town. If a person leaves the pre-set safety zone. Comfort Zone can alert the family member or emergency monitoring center of a possible wandering incident. Comfort Zone can also send an alert when the person has re-entered the zone.

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Buy a device and plan that meets your needs.

Questions to Ask

Things to consider before choosing a system.

Tracking Technologies

Learn the pros and cons of common technologies.