The author attended JRubyConf.EU, a conference where they sponsored, spoke, and participated in the "Track & Hack" project. The project used RFID tags to create an interaction graph of attendees, which was visualized on a big screen for everyone to see. The author gave talks about Neo4j and its integration with Ruby, and had discussions about graph-related topics throughout the conference. The author also showcased their own local RFID-Graph hosted on Heroku, allowing attendees to play around with it in real-time. The event was well-received, with many people showing interest in Neo4j and the tracking technology used in the project.