Please note that Zombie Detector is for entertainment purposes only.The detector analyses human voice frequency (VF) levels and returns four levels of warning based on volume.The warnings range from "A zombie has been detected" to "Get the hell out of here!" before a piercing zombie scream is emitted.Maps show your "zombie sightings" as well as "sightings" from around the world. Share sightings via Facebook, Twitter, email or SMS.Zombie Detector is your essential post-apocolypse survival tool. Good luck.