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) study was led by professors at Arizona State University and commanding officers in Phoenix. Among the other positive impacts that have been discovered, complaints against officers who wore body worn cameras dropped 23% compared to a 10% increase in officers who did not wear the camera. When the Rialto, California Police Department was attempting to improve public perception after a series of scandals, the department began issuing body-worn cameras to officers. A report on their 54 officers found that there was a 59% reduction in use of force by officers and that complaints fell by 87% compared to the previous