IoT allows inanimate objects and devices to communicate over the internet, sharing data and notifying each other of events. This enables new forms of participative and predictive marketing. Current examples include using video analytics to track shoppers and RFID to identify products. In the future, more sensors could allow proactive health monitoring and automated shopping based on smart appliances and the home network. IoT is expected to significantly impact marketing strategies and drive over $8 trillion in global spending by 2020.