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 worn video has been suggested and explored in parts of the medical field. Data recorded from wearable cameras can assist in medical research and limit error caused by inaccurate self-reporting of data. It is speculated that under-reporting is common when conducting dietary and nutrition assessments. Research suggests body worn video reduces under-reporting of intake during such assessments. Body worn devices have been used to assist in clinical settings. In 2013, Google Glass was used to assist in surgery by providing a mostly hands-free way to broadcast and receive consultation from another surgeon. Concerns over privacy have been raised with this