A new study has found that it is easier to remember a long-term password than a string of letters or numbers. The researchers used a technique called spaced repetition to test peoples ability to memorise a long string of words or letters. The study was carried out by researchers at the University of New York. They found that a quarter of people were able to use the technique to remember their passwords in a long period of time, but only a quarter managed to do so.”]
Source: https://nakedsecurity.sophos.com/2014/07/14/how-to-burn-a-password-into-your-brain/