From NewsFactor:
Though I try to keep close tabs on my family, it’s sometimes hard to know exactly where they are when. For example, when my daughter is on a play date or school trip, or my husband is traveling for work. For those who find moments like these unsettling, there are a growing number of services and devices that use satellite GPS signals and wireless networks to track the exact locations of your loved ones more closely. Many of these products are being integrated with cell phones, while others are stand-alone tracking devices.