We've posted previously about Electronic Voice Phenomena (EVP), the weird sounds in electronic recordings that some paranormal researchers insist are actually voices of spirits. But I didn't realize that EVP is part of a larger genre of ghostly phenomena called Instrumental Transcommunication "said to occur on devices as varied as television sets, radios, computers, handheld devices such as ipods or iphones, and even fax machines," according to Mysterious Universe. In the 1970s and 1980s, one popular medium for these ghosts in the machine were television sets. (Remember Tobe Hooper's excellent 1982 film Poltergeist?) From Mysterious Universe:
Throughout the 1970s and 80s the ITC phenomenon as it relates to TV really got its roots, becoming quite popular with researchers of the weird, and there were numerous supposed video and audio recordings of these TV bound ghosts at the time. The investigators in these cases claimed that this phenomenon had even been documented with TVs that were turned off or completely unplugged.
One of the pioneers of using televisions to try and pick up signals from the dead was a German ITC researcher named Klaus Schreiber, who used an apparatus that he called the "Vidicomin," which used a video camera aimed at a TV set that was switched on but not attached to an aerial, and the signal looped the output from the camera back into the TV. This loop was said to produce dramatic results, with various faces apparently blooming out from the white noise on sets, and on one occasion an actress from Austria named Romy Schneider supposedly clearly appeared on a TV in one such session years after her death. In 1986, another ITC researcher and physicist named Ernst Senkowski claimed to have attained a clear, unmistakable image of a spirit from a TV set. In this case, a brief feed of video was picked up depicting the spirit of a dead EVP researcher named Hanna Buschbeck, who had died in 1978. In the video, she allegedly appeared recognizable yet much younger than she had been when she had died.
"Ghosts in the Machine: The Strange World of Haunted TVs" (Mysterious Universe)