Suddenly, everyone from gun control advocates to big-city mayors to the manufacturer of Colt firearms is talking about using futuristic new technology to make guns safer. Their idea is to encourage the design and sale of "personalized handguns" that can be fired only by their owners. Ideas for such guns include a computerized chip that recognizes the handgun owner's fingerprints and a radio transponder that would detect a special ring worn by the user. Proponents argue... (GunPolicy.org)