"Equipped with a SiRF Star III chipset and a Siemens MC-46 tri-band GSM module, the unit measures 2.56 by 1.7 by 1.1 inches (45 by 66 by 25 millimeters) and weighs 3.1 ounces (87 grams), which makes it small enough to carry, put it on a belt or in a purse, or to set it on the seat of a vehicle. It uses assisted GPS and an internal antenna to lock onto signals, whether the unit is inside or outside."
"...you can trace every footstep from the comfort of your home using Google Earth. The aerial photo is clear to 1,000 feet: you can see cars and buses on the boulevards, boats, and most importantly, a clear trail of [the target's] movements, like breadcrumbs..."
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