YouTubers test out Ghost Radar, one of the most popular mobile apps for detecting "ghosts." WSJ's Andy Jordan samples the online amateur reviews.
Ghost hunters Roger Pingleton and ... Scientists, of course, denounce the idea. The app, like myriad other devices that claim to detect or communicate with spirits, can not be proven to work.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback