Magnetic Microscopy

I would still love to see magnetic microscopy become common. I believe that using a series of sensors similar to infrared we can take a magnetic picture of the earth or a region. By advancing the resolution of this picture we can detect the principles of the region. Perhaps by measuring the magnetic affects on a moving particle or series of moving particles in different locations and axes we can triangulate the magnetic data to form a good picture of an area without directly affecting it.