This document provides highlights from Google I/O 2018, including details about codelabs, office hours, app reviews, the keynote, sessions, and the sandbox area. It also mentions several specific projects showcased at I/O like Move Mirror, AR, Google Lens, Letters on the air, Music Creator, and Smart Display. The author is Kenichi Kambara, a mobile developer who regularly attends conferences. Contact information is provided at the end for technical requests.