"True.

Even so, the person could try doing EVP sessions, or if you can get your hands on one, a spirit box. EVP's are just you asking questions to the spirit while you're being recorded by a voice recorder. That method is usually pretty great if you have a lot of time on your hands because it does usually take pretty long to sort through all of the recordings to see if you got anything. Otherwise, you could use a spirit box. A spirit box is pretty loud and annoying because it's randomly picking up different radio frquencies, in which the spirits can manipulate them and use to communicate. I'm not exactly sure about how all that works, but you get the gist."