I first heard about the Andon cord in this excellent This American Life episode about a GM factory that tried to learn and copy the Toyota method of production.

I first heard about the Andon cord in this excellent This American Life episode about a GM factory that tried to learn and copy the Toyota method of production. It's still worth a listen and explains the concept well. https://www.thisamericanlife.org/561/nummi-2015 https://www.thisamericanlife.org/561/nummi-2015