Verizon Wireless plans to launch a wireless service that <A HREF="http://news.zdnet.com/2100-1040_22-6082472.html?tag=zdnn.alert">lets parents check their children's whereabouts</A> and alerts them when they venture out of bounds. Parents can use the service to set up geographic limits and receive text alerts if their children, who also carry phones, go too far from home. The service also lets parents check where their offspring are via a map on their cell phone or computer.