Crime is increasing day by day. To check crime new technological means are being continuously developed. One such wonderful tool is Sexual Predator List made available by registeredsexualpredators.org. It allows you to keep track of such people. In United states alone there are around 644,865 Sexual Predators. Once you register you can access complete report that includes a map, photographs, and addresses of sex offenders so you can find out who they are and where they live near you. I think that is real good use of technology.