Another area of evidence comes from Spiricom a two way conversation between the living and the deceased. In one experiment over 20 hours of dialog through the Spiricom device which the two developed together between 1979 and 1982.
Although there were some successes with Spiricom, the machine never proved to be reliable enough for general use. That of course, doesn't exclude from the fact that the machine did help establish some communication between the living and the deceased.
Miscellaneous musings of meager merit
3 days ago