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Google Rolls Out Cell Phone Locator
Google on Wednesday released upgraded mapping software that
figures out the general vicinity a mobile telephone is in
based on which transmission tower it is using. Unlike the
satellite-based Global Positioning System (GPS) technology
Google uses the exchange of signals between the phone and
nearby mobile phone towers to estimate the phone's location.
The beta, or test, version of new Google Maps for mobile
software lets users find their location , even if the phone
making the connection isn't equipped with a GPS receiver.
Unlike other mapping devices, Google's new tracking feature
can display a phone's location without the user entering an
address or coordinates through the keypad.
The free Google Maps version 2.0 comes with a "My Location"
feature that determines which cell tower a mobile telephone
is using and displays a map of the area with a blue circle
pinpointing the spot.
Unlike GPS, Google's tracking feature works while handsets
are indoors. "My Location" also drains less power
from a phone's battery than a GPS receiver does.
On the downside, Google's service isn't as precise as GPS.
In most instances, Google hopes to get within one-quarter
to three miles of a user's location — close enough to
provide helpful "neighborhood-level" information.
(November 29, 2007)
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