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) have trialed body-worn video systems since 2012, and have recently adopted body-cameras for deployment by all officers beginning in 2017. Police unions in Canada have been opposed to body-worn video systems, citing privacy and cost concerns. In 2015, several city police units including those in Winnipeg and Montreal announced plans to experiment with the technology. The Toronto Police Service started a pilot in 2014 with the technology during a year-long study of body-worn cameras. In total, 100 officers were using the technology from May 2015 thru May 2016. The evaluation report concluded that support for the body cameras was strong