The MW810 Mobile Workstation packs an internal "Dead Reckoning" GPS backup feature which continues to estimate your location even when the signal is lost.
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In fall 2007, Nokia also filed three patents related to determining location via Wi-Fi signal strength.
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Once plugged into a computer, the device sends out a signal pinpointing its location and the thief's IP address.
When a test train this week was parked in the same location, the control circuitry did not signal that it was there.
We tested the device indoors -- located near a window, it picked up a GPS signal easily, and transmitted its location to a map within the iOS app even as we walked 100 or so feet away, past several walls.
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The stylus transmits a signal that easily allows users to track down its location, making this the first pen that's nearly impossible to lose.
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We had experienced some minor problems with signal interference until we moved the base station to its present location.
Microsoft has researched how to determine location using special radio beacons as well as by analyzing Wi-Fi signal strength.
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But location-based services that use the mobile phone's ability to signal its exact whereabouts (within about 50 metres) will proliferate.
They began to search actively for the signal, eventually achieving perfect scores in tracking and identifying the correct location of the invisible light source.
We thumbed our phones trying to getting a signal, exchanged texts and surfed Twitter for storm updates, both for our location in lower Westchester County in New York, and for the traditional summer stomping grounds of Beach Haven, New Jersey, a spot of barrier island off the pine barrens where my toes have met sand and salt since the 1960s.
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It combines a conventional global positioning system (GPS) signal with those of other sensors - accelerometers and gyroscopes - to pinpoint a car's location to within 2m (6ft 6in).
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More signal input subsequently equals a more secure position read-out, with the elderly base system offering initial location accuracy to around 100 meters.
"A discriminatory and significant tax increase sends a hostile signal to international investors and will certainly dissuade these companies from choosing the U.S. as a location for job creating investment, " the letter says.
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