The Num8 from Lok8u (pronounced “locate-you”) is designed for parents who want to know where their children roam.  This GPS locator device is concealed inside an ordinary child’s wristwatch, and a parent can follow their kid virtually via mobile phone or computer.  Users also have the option of setting up a “virtual fence.”  If a child with the Num8 steps outside this “safe zone,” the parents will be notified electronically.  The Num8 will also notify the parents if the device is removed for any reason. 

Of course, this security has a price.  The device is about 149 Euros ($245,) and the location services range from about 4.99-19.99 Euros ($8-33,) depending on what type of service you want.