A wide range of smartphone apps contributes to the revival of psychogeography. An appealing example is Serendipitor, a free iPhone app that enables its users to “find something by looking for something else”. Begin by entering a destination, from which Serendipitor suggests various routes, which are shorter or longer, depending on how much time you have. As you navigate your chosen route, the app suggests actions and movements to generate interactive encounters. A similar project we wrote about isDérive, a web-based app that presents users randomly drawn task cards that tell them what to do. Highly recommended is the Inception app, that was also part of our top 5 apps for exploring the city. This app uses augmented sound to induce dreams through the headset of the iPhone and iPod Touch, changing your perception of reality. Interested in more? Adam Greenfield compiled a list of iPhone and Android apps that support surprise and drift.