Tatami (Japanese armour) the other related parts of a full suit of Japanese armour. Collapsible head protection such as "" and other collapsible armor are also "tatami" armor; a traditional kabuto could also be part of a tatami gusoku. Tatami armour was lightweight, portable, convenient for transportation, and they were manufactured inexpensively for the ashigaru light infantry. Tatami armours were worn by all samurai classes from the highest class to the lowest class. The higher class samurai wore elaborate armour while the lower class samurai and retainers wore simpler versions. In his book "Arms and Armor of the Samurai: The History of Weaponry
Body worn video (police equipment) would be a "clear change in working conditions" as well as something that could "impact an officer's safety". Washington D.C. researcher Harlan Yu conducted a study with the nonprofit consulting company Upturn, which focuses on technologies effects on social issues. The researcher conducted data that showed the lack of effect on the police body worn cameras. From the random sample of Washington D.C. police officers who wore these body cameras there was no significant data set to make a statistical difference. The results concluded that police enforcement who were equipped with body cameras used force and confronted civilians in a