A spirit box is a device used in paranormal investigations to communicate with spirits. It typically scans radio frequencies, creating white noise that some believe allows spirits to manipulate the sound and communicate through it. Users often ask questions and listen for responses that may come through the static. These devices are popular among ghost hunters and enthusiasts of the supernatural, often featured in shows about the paranormal. While some people report hearing clear responses, skeptics argue that the sounds are merely random radio signals or audio pareidolia, where the brain interprets noise as familiar patterns or voices.