Teen arrive alive GPS tracking system

Teen arrive alive is a GPS tracking system where parents can track where and how fast their children are driving at any time. I personally think this is a bad idea but with good intentions behind it. I think that if the 'child' is old enough to own and drive are car, they should be treated like any other road user and let it be their choice whether they inform their parents where they are or not. I also think that it invades their privacy; how would you like it if your whereabouts was being tracked all the time. The good intentions are there to make sure the teens remain safe on the road and so the parents know where their children are if they don't arrive home or are late etc but I think the negatives outway the positives so I do not support this scheme.