KMW Inc a South Korea-based firm, developed helmets having a wireless communication function and an LED lamp and exhibited them at Lighting Fair 2013, from March 5 to 8, 2013, in Tokyo. They are expected to be used by construction workers at construction sites and for evacuation activities at the time of disaster. KMW developed the "i-MetH," which was designed for use in construction sites and for heavy industries, and the "i-MetD," which is for use in disaster sites. i-MetH The i-MetH has a two-way wireless module using the 2.4GHz ba...