本內容為手機社群平台介面設計創作論述。PostHere 是一個讓使用者在智慧型手機上分享和接收情境內容的社群平台。使用者根據所在的情境，產製出一則則多媒體數位故事，並利用全球定位系統（GPS) 與數位羅盤技術，將內容留在空間中，共同建立地點資料庫。其他使用者便可從不同地點的資料庫中讀取內容，並利用擴增實境、數位地圖或街景重新建構的情境觀看內容，有如在真實空間中覆蓋一層數位故事空間。平台使用了社群機制進行內容排序和篩選，並刺激使用者更踴躍分享內容。 本論述探討了關於情境內容、社群服務和使用者介面與經驗設計的文獻，並進行個案分析，作為介面設計之基礎。設計的過程中也咨詢了介面設計領域專業人員的意見。 PostHere的主要目標族群為21至35歲的社青，有四個主要功能。使用者可創作情境故事留在特定地理位置上、閱讀其他使用者在目前位置上留下的故事、搜尋其他地點的故事、以及與有興趣的使用者聯結。本社群平台將先鼓勵使用者分享微旅遊紀錄，作為內容範例。 / This paper presents the prototype design of PostHere, a mobile social networking platform that will enable users to share and receive context aware content through an application on the smartphone. Digital stories in multimedia forms created by the mass users in relation to their spatial and temporal context are “planted” and left on a location using Global Positional System (GPS) and compass technology. These stories are stored in a location database for other users to retrieve and view in recreated context through augmented reality, world map or street view, like over layering a digital space on top of the physical space. Social mechanisms are used to sort out and filter content, while motivating users to share content actively. Literature review on context aware content, social networking and user experience design, together with case study on current mobile social networking app act as the basis of the development. Professionals from the app development field were consulted throughout the course of the user interface and user experience design. The final prototype has four main functions, targeted at urban young adult ranging from the age of 21 to 35. User may create and leave stories on a geographical spot, explore stories at their current location, search for interesting stories shared by others and connect with users they are interested in. Micro- travel log is chosen as the main content to help build up content paradigm. The prototype received positive feedback from test participants in Taiwan and will be ready for development into an actual product.