Have you ever been spooked by a bump in the night? Chances are it was the heating kicking in, or a draught slamming a door shut. But there are a some who are so convinced such sounds have paranormal origins that they spend their life looking for evidence. Now one such investigator has devised a so-called ‘pocket ghost detector’ that wouldn’t seem out of place in the Ghostbusters film. Called GhostArk, the detector was designed by Italian paranormal investigator Massimo Rossi. It features a so-called Ghost Box, that ‘sweeps’ various radio frequencies and records anomalies, and an electronic voice phenomena (EVP) recorder that can also track white-noise frequencies
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GhostArk was invented by paranormal investigator Massimo Rossi
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Two microphones scan for so-called electronic voice phenomena (EVP)
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While its 'Ghost Box' sweeps radio frequencies for unusual sounds
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EVP is classed as unexplained voices and sounds caught on tape
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A thermometer additionally locates hot and cold spots within a room
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Device can be pre-ordered for $199 (£132) and  goes on sale in the summer
In particular, paranormal researchers use @placeholder as evidence of ghosts or ‘otherworldly spirits’.