This one is a real alien or UFO detecting device and also drags out the nearby Xenomorphs. This is what, this Japanese Alien detecting mobile phone gadget 'Yutan' ensures. If you doubt any of your friend or acquaintance, then invite him to press both the center button and the button on the back by his forefinger and first finger for a couple of seconds. Beat that bastard and put it into the container, you had already chosen, but only after the device beeps with glowing light in multiple colors, otherwise vice versa will happen.
Actually it detects magnetic field alterations or body temperature fluctuations. It's available in Silver, Black Metallic and Orange for $17 in Japan Only.