Is it possible to pinpoint your location with nothing more than a cellphone number? Absolutely.

Your smartphone always knows where you are. And thanks to the Life360.com service, powered by technology from a company called Loc-Aid, a parent can locate a child by her phone number or even an elderly parent who has wandered away from home. 

Indeed, network location services can save lives, protect children, and enable business services -- and they're available to anyone.