Privacy is a major concept of life-logging especially in insecure
smart environments in which a variety of data from users and
devices are exchanged and collected. The massive production
and transfer of sensitive data such as personal photos,
messages and videos encounter the danger of disclosure. In
order to ensure privacy on smart environments the principles
of privacy should be applied in a lightweight privacy by design
approach. The basic principles for ensuring privacy in smart
environments of life-logging are detailed in Nixon et al. (2004):