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Note
NoteNote
Note - As part of an organization’s safety policy, it is prudent to have safety-monitoring personnel contact
a mobile worker who has triggered an emergency alert and cancelled it. From a diligence perspective, the
mobile worker’s safety is most thoroughly assured.
Further, BlackLine GPS recommends that users be instructed to use a code-word for a situation where a
mobile worker triggered the emergency alert under duress but has been forced to cancel the alert.
Other wider-ranging safety policy and protocol considerations should be examined within each company
who deploys the LonerGPS solution.
Limitations
LimitationsLimitations
Limitations
There are a small number of limitations that must be carefully noted. These limitations relate to the
layered safety approach delivered by the LonerGPS system and affect its ability to provide protection to
mobile workers.
Wireless communications reception (GSM)
Wireless communications reception (GSM)Wireless communications reception (GSM)
Wireless communications reception (GSM)
Wireless signals are not nearly as weak as GPS signals and as a result are able to penetrate into most
structures that people frequent. As a result, wireless connectivity is more likely to be maintained
throughout a region covered with wireless signals than GPS. Maintaining a wireless connection is the
fundamental layer of safety.
There are certain locations where signal coverage does not exist or is poor. Signal coverage is typically
less available within rural areas than urban due to concentration of populations. Consult the Coverage
section above for current estimated coverage information for LonerGPS.
An alert may be configured within LonerPortal for situations where a device has unexpectedly left
coverage, the battery has expired, or the device has been damaged. This alert notifies monitoring staff
once the condition has been detected. Considering that the mobile worker is no longer protected by
LonerGPS, this alert enables monitoring staff to investigate the situation further to ensure safety of the
worker.
Note
NoteNote
Note - In this type of situation, it is crucial to have a recent GPS location to understand the approximate
location of the mobile worker. The LonerPortal’s location scheduler accomplishes this task by
automatically requesting periodic GPS locations from LonerGPS devices.
GPS reception
GPS receptionGPS reception
GPS reception
LonerGPS features BlackLine GPS UltimateSense™ GPS antenna technology that allows LonerGPS to
‘hear’ extremely weak GPS signals.
It should be noted, however, that GPS signals are near noise-floor (extremely weak) and are not able to
penetrate concrete, metal (steel), carbon fiber, and some metallic window tint films. While operating in
areas where GPS signals may not be sufficient, such as within some commercial structures, scheduled
GPS positions may not be retrieved, causing failed scheduled location alerts (if configured within
LonerPortal). Not being able to track within commercial structures built of metal and concrete is
unavoidable and are not a symptom of the product itself, but rather a limitation of physics.
Note – BlackLine GPS recommends a tracking schedule be created for each device in order to provide a
current location within GPS coverage. This ensures a most recent GPS location is available near where a
mobile worker has entered an area of no GPS signal coverage.
Battery Power
Battery PowerBattery Power
Battery Power