This document discusses an augmented reality app called Sekai Camera that allows users to geotag photos, audio recordings, and text with location information. The author believes augmented reality has great potential to revolutionize education by making learning more interactive and helping students more easily find real-world examples of concepts. He has started experimenting using Sekai Camera to allow students to view and comment on geotagged content from teachers and peers related to class excursions and fieldwork. Some key features of the app mentioned are filtering geotags by age, distance, and individuals a user follows.