This presentation will discuss advanced electromagnetic induction (EMI) sensing systems and models that have been developed over two decades for the detection and identification of subsurface hazardous targets. First, the basics of the advanced EMI geophysical sensing technologies will be described briefly. Then, we will introduce our handheld advanced electromagnetic induction sensors, operating in different EMI sensing modes. This will cover recent developments in hardware and software to detect, locate, map, and identify subsurface unexploded ordnance, landmines, improvised explosive devices, nonmetallic projectiles (smart bombs), and subsurface infrastructure (such as utility wires, pipes, and tunnels). Finally, blind classifications results will be demonstrated for metallic and less-conducting targets.