Context-aware life memorandum

Abstract

"Life is not what you live, but what you remember", said by Gabriel Garcia Marquez. Most people tried to write diary when they were young. As they grow up, they may abandon this habit due to busy life style in modern society. However, the value of life recording is inevitably beneficial. This project aims to facilitate people in modern city to record their daily lives with their smart phone and provide a convenient tool for memory exploration. To achieve the project objective, an iPhone application called iLifeMemo is developed. It is a context-aware application that possesses the following features: • Automatic recording places visited by user using technologies and algorithm such as GPS positioning, geocoding services, Bayesian Network, etc. • Innovative life memo exploration using augmented reality. • Building collective memory based on life memos written by different users so that they can explore famous events happened in the past. • Fundamental life memo functions which include text editing, photo attachment, tagging and geotagging. As iLifeMemo is developed as an iPhone application, xcode 4.3 is used to develop an iOS 5 mobile application. The application targets iPhone series from 3GS to iPhone 4S with iOS 5.0.1 or above. Since mobile data network are expensive and iLifeMemo is a context-aware application such that many operations are done automatically, the data network will be carefully monitored to avoid unnecessary network overhead. As battery life of mobile device is limited, memory control is carefully performed to prevent unnecessary memory usage as well as memory leakage. Processes that involve large computation power are held in server side to reduce battery consumption in iPhone.