https://hackaday.com/2017/07/18/def-con-badgelife-someone-finally-did-it/
DEF CON Badgelife: Someone Finally Did It | Hackaday
Jul 19, 2017 - Badgelife is the celebration of electronic conference badges, a way of life that involves spending far too much time handling the logistics of electronics...
def condid itbadgelifesomeonefinally