okay, so I don't know if this is possible for Driod, but I know that Iphone and touch have multiple EMF detector apps.
Of course, everybody by now knows what emf detectors are with like every tv station having some sort of paranormal show, and I would assume that an EMF detector would get very popular considering how other apps like Ghost Radar have become.
I don't know if an EMF detector would be possible, but hell I would pay $10 for the app myself if it worked. I know the ones on Iphone work with the compass feature or something like that possibly. Is this possible for Droid or anyone workin on it?
here are a couple that i saw from iPhone:
iPhone Apps - Ghost Hunter EMF by John Cotant : AppAdvice - AppBase