I just found this article on Yahoo! News.

It is quite disturbing

There are two companies offering a service to parents WQN and Aegis Mobility - there is software and then a monthly fee. Then services track the kids and turn of their phones in certain locations.

WQN's surveillance service promises more than just disabling the phone in cars. It can monitor a person's whereabouts, notifying parents by text messaging when their children step out of designated zones or return home. It also can turn off a cell phone at school, preventing cheating by text messaging during classroom tests, based on a reading of the school's location.

The question parents would have to ask themselves is whether they'd want to prohibit their children's activities this way. That kid you're trying to control might not be driving, but rather sitting on a train or a city bus or in the passenger seat of a buddy's car.

It seems a whole set of technology tools that are part of enabling over parenting. sigh.