ITC is an umbrella term that refers to all forms of spirit communication using any kind of electrical instrument. The best-known method of ITC is electronic voice phenomenon, or EVP, which is a small sub-set of the wider topic of ITC.

The term instrumental transcommunication was coined in the 1970s by Prof. Ernst Senkowski, a scientist with a background in experimental physics who went on to conduct experiments to try to find out the source of unexplained voices on audio tapes. This is of course known as EVP.

The term ITC isn't limited to audio devices. It encompasses any communication between the living and spirits or other discarnate entities through any electronic device. This can be anything from tape recorders through to computers, and in more recent years, ghost hunting gadgets such as smartphone apps.

ITC also covers visual forms of communication, normally conducted with the use of a television and video camera...