How many users write down their passwords and where do they write them?
Study: Benchmarking: Passwords -- The Sad Truth About Security
Date: October 2006
More than one in three enterprise users keep a written record of their passwords.
Of the third of users that write down their passwords, one third of those do it on paper, such as a sticky note. The other two thirds keep their passwords as a text file on their laptop PC or mobile device.
There was no clear correlation between password complexity and the propensity to write down passwords.