Now that millions of kids are toting around mobile phones, parents are looking for more ways to police how they're using them. There's the obvious stuff, such as limiting the hours your kids can use the phone, or barring them from access to certain Web sites, but some companies are also adding location-tracking features so that Mom and Dad have an idea of whether Junior is really at school or not.
A company called Firefly Mobile is offering a phone specifically for kids aged 5 to 8. Instead of a standard keypad, it will have dedicated buttons for dialing Mom and Dad or 911. (See the image at left.) Apparently civil libertarians have criticized the tracking technologies, but since when were families free societies?—Gregory Mone
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.