Roy used technical devices for his fraudulent mediumship and employed hidden accomplices. He concealed a
microphone and recorded the conversations of the sitters before his
séances. His "
direct voice" mediumship was a clever microphone relaying technique. The "spirit" voices were made in an adjoining room by his accomplice who spoke into a microphone or played tape recordings. Despite his confessions Roy continued to operate as a fake medium under the name "Bill Silver" until his death. Roy's apparatus for his fraudulent mediumship is now contained at
Scotland Yard, in a museum at the Metropolitan Police Detective Training School. ==References==