What is a Digital Footprint?: Introducing Online Tracks

Learning Objectives Define 'digital footprint' and explain how online actions create it. Differentiate between active and passive digital footprints. Explain how data, like photos and comments, is stored on servers using binary. Model how a simple conditional statement (IF-THEN-ELSE) can control data visibility (e.g., public vs. private posts). By the end of a lesson, students will be able to trace the path of a piece of shared information and identify multiple points where it is stored. Analyze how a loop of user actions (e.g., watching multiple videos) can be used by an algorithm to make recommendations. If you walked on the moon, your footprints would stay there forever! 👣 What if your online actions also left permanent tracks? In this lesson, we will explore...

TermDefinitionExample Digital FootprintThe collection of all your online activities and data, like a trail of digital breadcrumbs you leave behind on the internet.Your digital footprint includes photos you post, videos you watch, comments you write, and even websites you visit. Data PermanenceThe idea that once information is put online, it is extremely difficult to completely erase because it can be copied and stored on many computers (servers) around the world.Even if you delete a photo from your account, someone might have already saved it or screenshotted it. The data still exists. ServerA powerful computer that stores and manages data (like websites, photos, and videos) and makes it available over the internet.When you upload a video to YouTube, it's not stored on your computer;...

The Footprint Creation Loop FOR EACH (online_action) { ADD (online_action) TO (digital_footprint) } This pattern shows that every single action you take online—a click, a search, a post, a like—is one iteration of a loop that adds another piece of data to your permanent digital footprint. The Visibility Conditional IF (post_setting == 'Public') THEN (anyone_can_see = TRUE) ELSE IF (post_setting == 'Friends') THEN (only_friends_can_see = TRUE) ELSE (only_you_can_see = TRUE) This is a complex conditional statement that websites use to control who sees your data. Your choice in the privacy settings (the condition) determines the outcome of who can view your post. The Rule of Data Permanence Data on a server can be copied an infinite number of times. De...