Gadgetory

the beloved Guardian is a simple tracking device that is compatible with an iPhone or Android app you set the boundaries through the app while your child was a small tracker on his wrist if he crosses the boundary you'll be notified the range is only 60 meters from your phone but the Guardian only costs 40 bucks and there's no monthly service fee the Filip is a watch that can make and receive calls it can also transmit aware as location to a caretaker who has downloaded the partner app the flip cost 150 dollars requires a $10 month service plan to use the 125 dollar amber alert GPS device works in a very similar fashion but is clipped onto a child's clothing or worn around the neck it also takes location data to a paired cellphone app every five minutes monthly plans start at $15 and finally in China concerned parents can purchase at 360 one smart shoe it looks like a regular kid sneaker but the heel is embedded with a tracker that will show your child's whereabouts on a map no word on pricing or if they'll make their way stateside in San Francisco I'm Kara Tsuboi cnet.com for CBS News