The course covers the examples of x-ray images presenting main types of means of transportation and different cargo. The course is organized in a real working environment by using the same x-ray software as on the x-ray devices. The course covers several subtopics such as overall information of the cases of x-ray seizures in relation to the construction of means of transportation, smuggling methods and techniques. The customs officers studying this course will be acquainted to the effective use of x-ray software tools. Information of possible hiding places and concealment will be shared.