Smart phone users have quickly become obsessed with the new "Pokemon Go" app since it launched last week. People all over the world are downloading the game and looking for animated characters in real life. Using a mapping device, the app tracks your location while you collect as many Pokemon characters as possible. But police think the "lure" feature of the game is dangerous. Meant to trick virtual creatures to go to your location, it also exposes vulnerable players to those with ill intent.