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Certain modern electronic devices like television were originally created for clairvoyant purposes as well other means like spirit boxes through ITC and EVP to contact entities.
Sources:
http://gizmodo.com/an-occult-history-of-the-television-set-1521354168
https://joecruzmn.wordpress.com/2014/02/23/the-occult-history-of-the-television-set/
http://www.theparanormalguide.com/blog/spirit-hand-on-television-set
https://www.thoughtco.com/contacting-the-dead-in-electronic-age-2594014