A Stylometry System for Authenticating Students Taking Online Tests

A Keystroke Biometric System measures the typing characteristics believed to be unique to an individual and difficult to duplicate. A Stylometry Biometric System measures the frequency of text file features such as: number of alphabetic characters/total number of characters, number of uppercase characters/number of alphabetic characters, etc. We captured keystroke and stylistic e-data from online test-takers with a modified feature extraction component of the keystroke application. We use a k-NN classifier to analyze the test and training files and measure the system performance, FRR (False Acceptance Rate), and FRR (False Rejection Rate). Results show a functional system and the usefulness of Stylometry for authenticating online test takers. 1