The article deals with blood sprays and blood drops and shows new insights into obtaining information. In recent years, it has been shown that further application of forensic biomechanics - biomechanical analysis of blood sprays can be considered. In the case of violent crimes, bloodlines in the form of blood sprays are often found at the crime scene. Blood droplets and blood drops are affected by internal and external influences at their onset. The shape of the blood drop is determined by the movement of blood during flight and the impact on the pad, the angle of incidence, the impact velocity. The external forces that arise during the movement of the offender or the victim may also be involved in the flight of blood drops. From this perspective, it is possible to say that the shape of blood traces has encoded biomechanical content. It is possible to find out the amount of important information with the bloodlines at the crime scene.