In keeping with my tendency to offer topics nobody else is interested in, here's an article about overly-guessable PIN numbers. The author shows with graphs and grid patterns how dopey most of us are in picking PINs.
There exist 10,000 possible four-digit PIN numbers, but statistically, one third of all codes can be guessed by trying just 61 distinct combinations. What are the commonest? Does a pattern show up with regard to PIN numbers that represent dates, repeating numbers, or patterns on a keypad?
You betcha, and here ya go:www.datagenetics.com/blog/september32012/