Hidden Secrets is an augmented reality experience that involves both human- centered computing (Android mobile application) and Augmented Reality. Targeted users (York University students) may interact with the system in four simple steps: 1- Downloading the Hidden Secrets application on user’s Android smartphone. 2- Inputting the user’s secrets in the provided textbox and selecting the desired text color and size from the drop down lists. 3- Clicking on the View Hidden Secrets button in order to activate the mobile’s camera. 4- Placing the mobile along the area with the provided markers on the wall in order to view all secrets that have been overlaid.