The program is used for identifying if two different texts (e.g. forum comments, e-mail messages, office memos, etc.) are written by the same person, after comparing them. The result is presented as the probability percentage of that event on a 100 point scale. Despite the seeming simplicity, A-Number Sherlock Holmes is the only currently available shareware, which is able to determine if two compared texts are written by the same person or not. In its work, the program uses special algorithms and gives very accurate results of the analysis.