During the lecture, Bartosz will talk about the technological aspects of virtual reality and discuss the components necessary to create a training system using virtual reality. He will also present several examples of Polish developers that create training solutions in VR. Over 150 companies in Poland produce VR applications, and successfully offer their knowledge and skills to clients all over the globe. Bartosz will try to give the most interesting examples of applications that increase not only work efficiency but also more conscious response in a life and health threat. We will also go through the equipment necessary to run virtual reality; we will discuss its types and future changes resulting from the development of 5th generation telecommunications networks. We will also indicate other important technological trends that should be taken into account when planning the development of the training environment of the future.