Ghosts

I found this in Ye Antient Blogge:

Every new medium is a machine for the production of ghosts. (Kafka knew this.) As Friedrich Kittler argues [in Grammophon, Film, Typewriter, 1986], "The spirit-world is as large as the storage and transmission possibilities of a civilization." The oldest available print of a printing press is a 1499 image showing skeletons cavorting about a press, pages in hand, doing a dance of the dead. Spiritualists, as we have seen, did the danse macabre of the telegraph, celebrating the spirits conjured by electricity, the first of many in the nineteenth century to recognize that the realm of the immortals had expanded from the remembered dead to the transmitted and recorded dead.
— John Durham Peters, Speaking Into the Air, 139.

And then there's the recorded dead re-recorded in saecula saeculorum...