In-Class Exercise:
Evaluating a Keystroke Biometric Authentication System

Tools: KeyTrac Authenticator, prepared Excel Spreadsheet

In this exercise we will conduct an experiment using the KeyTrac keystroke biometric system found on the internet. Because many biometric systems are available on the internet other similar experiments can easily be designed.

This exercise uses the KeyTrac System that authenticates a person by their typing dynamics. For reasonable statistical analysis the exercise works best for a class or group of at least 10 people, preferably 20-30 or more.

Before performing the exercise, the following should be discussed:

This exercise consists of the following steps:

  1. Collecting data: the data required for this exercise consists of authentic and imposter scores obtained from all the participants using the KeyTrac system.
  2. Performing an analysis of the data: the data are entered into the prepared spreadsheet that automatically performs an analysis of the data.
  3. Determining the performance (accuracy) of the biometric system: usually measured by the Equal Error Rate (EER) or the Performance (1-EER) of the system.

Key ingredient of exercise:

Student learning outcomes: