Take the Cucumbers! An Analysis of User Selected PIN Numbers
Authors: Howard Smith

Date: December 2010
Publication: Passwordscon 2010 (Passwords10)
Source: Currently no known Internet copy of paper.

Abstract or Summary:
Numerical analysis of PIN choice from a database of 12,453 users. The PINs were entered using a telephone interface and were required to be between 6 and 10 characters in length. Comparisons are made between the PINs and telephone number also recorded in system, dates, numerical sequences, words converted into keypad number representation. Also looks at PIN length and digit choices.

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