GPS shoes redefine track

We're not all that big on the high-tech apparel trend, but if clothing can help save our lives, it'll get our attention every time. The GTXC "Xplorer" is a line of running shoes equipped with GPS transmitters. Beaming constant signals to show their location, they were designed to track the whereabouts of children and patients, according to Electronista. The shoes can send signals to cell phones and relay text messages if they stray beyond predetermined boundaries that form "virtual fences." Maxwell Smart would be proud.