Surveillance
equipment for tracing
Supervision, tracing and surveillance devices
Recent technological development, together with the decrease in costs of
various electronic gadgets, have allowed development of various devices and
technological combinations that provide us with both surveillance abilities and
possibilities of tracing and locating people and property, which did not previously
exist.
Following are a number of tracing and locating methods, which can be
used commercially in the free market:
Local tracing equipment:
Using local transmission devices (such as Bluetooth), it is possible to
connect two electronic devices. Currently, the market offers devices resembling
a watch/bracelet, worn on the arm and traced by another device. Due to distance
restrictions, these devices are suitable for supervising children (or mentally
handicapped individuals) in a crowd/fair/shopping mall, with the relative
location of the child appearing on the supervising device.
Cellular tracing equipment:
Principles of cellular technology make it currently possible to trace
phone devices through triangulation (performing an "intersection") between cellular
cells (the "antennas"), allowing us to calculate the approximate location of
the device. Calculation is performed by the cellular service
supplier's computers and sometimes requires a court or police order.
Global Positioning System:
Global Positioning Systems (GPS) have become a rather conventional item
these days. By receiving signals from several satellites positioned in a fixed
position in space, it is possible to calculate the exact location (again, through
triangulation) on earth. Reception and calculation can be done with electronic
components and software in small devices carried by the person. The current
accuracy level is 3 meters.
Therefore, we can now trace and locate and/or rescue, using the technologies
mentioned, each separately or by combining them, all according to requirements
and possibilities.
Tracing
devices for remote and isolated areas
Aviation and marine:
A device that operates automatically in an emergency (fall, crash or
drowning). The device receives the location through the GPS, and
sends the location using an emergency frequency radio transmission.
Personal tracing device:
On trips and treks in remote areas, with no cellular infrastructure, it
is possible to carry a personal emergency tracing device, to be operated manually
in case of an emergency. This device will also trace and send the location
using an emergency frequency radio transmission.
Tracing
devices for "inhabited" areas, with no cellular coverage
Route recorder:
A small box installed in a vehicle, which records the route of travel. This
device does not offer the possibility of "real time" tracing, but rather used
as control device for vehicle fleets, where it is necessary to verify a route
between a few points etc. Requires "downloading" the route recorded to a
computer.
Personal tracer and emergency button:
A small GPS receiver, equipped with a regular cellular SIM card, and an
emergency button, that when activated, receives the location using the GPS
system, and sends the location as an SMS to the selected number (to a private
number or the number of the company supplying the service). This makes it
possible to immediately trace, almost in real time, the exact location of the
user
(the size of the device is
similar to an alarm remote control or a mobile phone...). The location can be
received on the map immediately.
Location transmitter:
Also based on receiving the location through the GPS and transmitting
continuously or in fixed intervals, to the call center. This device is
suitable for tracing merchandise/containers, controlling and monitoring a
vehicle (vehicle fleets, taxis and of course personal surveillance purposes). Here
again the location can be received on the map immediately.
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