Today we will investigate biometrics, the use of physical characteristics to digitally identify a person. The purpose of this investigation is to explore how we can use the patterns and measurements of our bodies to create a small database of information that is unique to you! We will even make some secret messages using DNA code! We challenge you to explore these two engineering problems as a scientist would. What does this mean?

Scientific exploration is different than just playing around because it asks you to think about HOW you investigate. This means you need to do your investigation by observing what happens when you change a variable you have carefully chosen. This helps you to understand WHY something happens. Scientific exploration also means that you record WHAT you see or measure and that you record WHY you think it happens. The Young Scientist Journal that you are holding will help to guide your investigation and give you a place to record your observations, measurements and conclusions.