Tagging real world objects

The document discusses the concept of Iwinkd, an online platform that allows physical objects and places to be tagged so that conversations can be started and continued between different users over time. It provides examples of how books from a library, movie posters, event posters, cafes, and other physical locations could be tagged using Iwinkd tags to initiate discussions among multiple people who engage with the tagged items. The document encourages readers to try out Iwinkd and see how it could be used to start conversations in various real-world contexts.