Search-Based Picture Sharing With Mobile Phones

We demonstrate search-based data dissemination among mobile phones where content spreads according to how well it ranks against a user's declared interests. The dissemination is facilitated by Haggle - a data-centric architecture for opportunistic networking environments. On top of Haggle we run an example application, called PhotoShare, which allows users to take photographs with the phone's camera that they can then share with other phones directly, over either WiFi or Bluetooth. In order to illustrate how Haggle disseminates the photos, we visualize each phone's internal state on an external screen. Through the visualization it is possible to see how search primitives, such as relative matching and ranking of content against keywords, are used in Haggle as means to determine the dissemination and forwarding of data.