The incredibly intricate badges of Def Con
 

Three days before the 24th annual Def Con hacker event, badge designer and builder 1o57 (aka Ryan Clarke) had a problem. "The lion's share of the 20,000 badges showed up this year not programmed," he told Engadget. He gathered up a team and they went...

https://www.engadget.com/2016/08/13/...n-2016-badges/