Here's how the carrier's new location tech works when a mobile phone connects with emergency services, and how it compares to the competition.
Detecting a cellphone’s location during a 911 call is more complex than when it comes from a landline, but last week, AT&T
With a cell phone, the location information is traditionally detected based on the towers relaying the signal to AT&T. “We use the cell towers to get the location of the caller,” Sambar says. That can provide location information that’s as large as a 10-mile radius, he says. “Sometimes it’s hard to pinpoint where the caller is,” he adds.
It works, Sambar says, thanks to considering more information than just cell towers for people on the AT&T network. “We now have more data from the device, using a combination of GPS, wifi, [atmospheric] pressure sensor in the device, [and] accelerometer in the device,” he says. The result is that the location accuracy is boosted: the system can now locate the caller within about 164 feet, AT&T says.
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