Tag Your KidGet RFID enabled clothes for your kid. Keep track of them when they play. The clothes also let kids play tracking games with each other. (Make them think it's fun to be tracked)
Kevin Seirs comic Stolen From FamilyCircus.com
This garments uses mobile phone and camera technology to help parents pin point their kids' position, but also fabric antennas, radio tagging and miniature remote cameras to allow children to play exciting games outdoors.
No kidding - Royal Philips Electronics