EMF Meters. Electricians and engineers use EMF meters to identify faulty wiring. Paranormal investigators use them based on the theory that spirits may be able to manipulate EMF fields—when your ...

A couple of months ago I searched online for an EMF detector after talking with Kyle Weins of iFixit about alleged radiation from smart meters. (Actually, my first foray into EMF detection was with an ...

But mostly, ghost hunters use pre-existing technology: not just EMF meters, but also run-of-the-mill digital recorders, used to capture electronic voice phenomena, or EVP.