In the following video Mattias Rost is presenting and demoing a mobile application called Portrait Catalog. Portrait Catalog is an application for sharing and collecting portrait photos of friends. The portraits are sent over Bluetooth from one person to the other, but portraits cannot be forwarded once received. The application is inspired by the act of sharing portrait photos in elementary school, where youngsters eagerly exchange their portrait picture with their friends when the photos arrive. The application was developed during an internship at Sony Ericsson in the early summer of 2008.