Securing Shareable Life-logs

Sharing life-log information in a social community has many advantages, both for the user and society. But sharing any type of personal information is a threat to privacy. In particular, life-log information requires higher security considerations since it may contains very sensitive information about the user such as biological information, location, communication logs, etc. In this paper, first we discuss the risks of sharing life-log information in a social community. Then we will introduce a sharing model, which can eliminate the sharing capability of a life-log information object, based on the expiration time. Furthermore, general security approaches which might decrease security related risks for life-log systems will be described.