The ways parents can track their children. Excerpt:
Car: Devices can record distance, speed and driving behavior, such as hard braking and sharp turning. Some pinpoint a car's location using Global Positioning System technology and alert parents if a teen driver exceeds a certain speed or leaves a defined geographic area. One, the CarChip, costs $139. Monthly services cost $20 and up.
Cell phones: GPS enables parents to locate a child's phone on an online map. One service will text message parents if the phone leaves a predetermined zone. Monthly services typically cost $10 to $20.
Software: Various programs can track Web activity and record online chats, instant messages and e-mail. Parents can receive reports and alerts by e-mail and, in some cases, by phone or text message. Prices range from $40 to $100 in one-time or annual fees.
