How to Memorize a Random 60-Bit String. Marjan Ghazvininejad, Kevin Knight – Information Sciences Institute, Department of Computer Science, University of Southern California:

“User-generated passwords tend to be memorable, but not secure. A random, computer-generated 60-bit string is much more secure. However, users cannot memorize random 60- bit strings. In this paper, we investigate methods for converting arbitrary bit strings into English word sequences (both prose and poetry), and we study their memorability and other properties.”