Cinderella analysis
n.— «If suspects claim the shoes are not theirs or that they had not been wearing them, scientists will be able to test their claims using a technique known as “Cinderella analysis”, which compares the wear on other shoes worn by them.» —“When something is afoot, crime prints will reveal if the shoe fits” by Stewart Tendler Times (London, England) Jan. 30, 2007. (source: Double-Tongued Dictionary)