Andon is termed per Japanese as, 'paper lantern'. It is nothing but principles of Jidoka quality control. As name describe 'paper lantern' which was used in olden days to find misses and we call it as a visual management in today's environment to identify the bottlenecks. This system enables the employee or an operator to take action by pulling an andon card throught the assembly line if any abnormalities and any potential bottlenecks. Basically in this andon system, it gives the signals by visuals and based in the visuals an automatic alarm to employee.
One of the example is in the hospital is, patients safety systems used in many hospitals. If any abnormalities in the vitals the machine or instrument gives signals so that healthcare professional attend immediately.