Fault tolerant surveillance system based on a network of mobile devices

According to Maslow´s hierarchy of needs, personal security plays an important role in everyone´s life. Thus, over the years, surveillance systems have increased in both complexity and performance evolving from video cameras monitored by human operators to systems capable of automatic intrusion detection. Recent technological development and the increased demand for mobility have led to devices equipped with a variety of sensors that are able to handle a considerable workload. A personal security system is therefore, now more than ever, accessible to anyone. This paper presents an implementation of a system of mobile devices, organized as a fault tolerant network, capable of automatic monitoring and detection of intrusions. We quantify how well various devices can perform in such a system and we analyze the fault tolerance it can provide.