We appear to be headed toward a trillion sensor world [127] where device heterogeneity and interoperability at scale
will pose formidable challenges. The interface between the information world and the physical world will be necessarily
characterized by an ever growing variety of sensing devices producing an unprecedented data volume that will create
excellent opportunities for value creation through big data analytics. In the meantime, advances in MEMS miniaturization
may soon get us closer to the Smart Dust vision. At that point, sensing will be inherently pervasive, and the line between
human-free and human-centric sensing will all but disappear.