A spirit box is a popular paranormal gadget that scans through the radio spectrum in the hopes that spirits can make their voices heard amongst the white noise and fleeting snippets of radio broadcasts. Although it's sometimes forgotten, this too is a form of EVP and uses a principle similar to the work of one of the early pioneers of EVP, Marcello Bacci.

The idea of using what is essentially a modified radio to pick up the voices of the dead divides the paranormal community, with many thinking it is a valid way to communicate with spirits, while others think it is nothing more than random radio noise.

The boxes rapidly scan through the AM, MW, and FM radio spectrums, and as they do, fleeting bursts of white noise and static can be heard. Some spirit boxes have various settings that allow you to tweak which bands the device scans through and...