The document discusses the concept of the Internet of Things (IoT), which connects physical objects through networking technology and sensors. It explains that IoT allows everyday physical objects to be connected to the internet and share data. It provides an example of how a book could be made a "smart object" by adding it a unique ID, communication abilities, and sensors to track its location. The document envisions a future where IoT allows people to easily track their belongings and create mobile apps to locate lost items at low cost through small, embedded hardware and technologies like RFID tags.