"Awareness" is the ability to be conscious of, feel, or perceive (Wikipedia). This implies vigilance in observation and alertness in drawing inferences from what one experiences (Merriam-Webster). The ultimate goal of awareness computing is to create computing systems that are themselves aware. This conference has been evolved from the International Workshop on Aware Computing (IWAC2009), the International Symposium on Aware Computing (ISAC2010), and the International Conference on Awareness Science and Technology (iCAST2011) in Dalian, and iCAST2012 in Seoul, Korea. The conference provides a forum for researchers, engineers, and scientists for discussing awareness computing and exchanging ideas, opinions, and the latest results in this emerging new field. The event this year is scheduled: