Is it possible to design a MRI scanner for 3D Xray Humans in a smart phone size device?
Can you then make another one that edits DNA or Cells at a microscopic level?
It sound like science fiction but so were smart phones 15 years ago.
It is the size of a cell phone from 20 years ago, but I think this is close to what you describe: http://thefreethoughtproject.com/police-x-ray-guns-detect-drugs-guns-car/
It is made by American Science & Engineering