True Vastu Claims Energy Checker machines are false; they are basically for Show Off (done by other Vastu Experts), but as per the scientific reason, Energy Checker Machines detects electromagnetic waves or Radiations that create frequencies when they are in contact with any other metallic/electrical equipment. Whereas Gurudev shrie Kashyap checks Negative Energy by vibes of the place, as per Vedas, Negative Energy can be detected by the person connected to God.