The power of the Gemini system lies in its ability to simultaneously detect both organic and inorganic materials with its combination of dual-energy transmission and Z Backscatter X-rays - two complementary, advanced, and commercially-proven technologies. Together they provide the most information available about the contents of a parcel.

Gemini's Dual-Energy Transmission X-rays generate a high resolution image in which metallic threats such as guns and knives are easily detected and fine details such as tiny wires that could indicate an improvised explosive device are discerned. Dual-energy transmission technology uses two X-ray energy levels to determine the "effective" atomic number of objects in the parcel and then colorizes the image based on material type.

Gemini's Z Backscatter X-rays generate an image that highlights organic materials - such as sheet explosives, bulk explosives, narcotics, and plastic weapons - frequently missed in transmission-only detection systems. Z Backscatter's photo-like images facilitate image interpretation and reduce operator fatigue.