This document outlines the design of a mobile app called "Pocket" that allows users to identify and purchase clothing items they see someone else wearing in public. The design process includes creating user profiles, defining the key tasks, researching similar products/users, sketching wireframes, and proposing next steps. The proposed app would use computer vision to recognize clothing when the user takes a photo, then provide matching items for purchase. Privacy concerns are noted as a potential barrier since photos would be taken of people without consent.