password fatigue

is the feeling experienced by many people who are required to remember an excessive number of passwords as part of their daily routine, such as to logon to a computer at work, undo a bicycle lock or conduct banking from an automated teller machine (ATM). The concept is also known as password chaos or more broadly as identity chaos.

One of the tribulations of internet life is password fatigue. Use a different one for every website and you're likely to forget them. Write them all down, or use the same one, and you risk becoming the latest victim of identity theft.'