The document discusses the accessibility of mobile cyber physical systems (MCPS). It defines MCPS as a subcategory of cyber physical systems where mobile devices play an important role in computation, data exchange, and acting as network nodes. The document emphasizes that the properties and applications of MCPS, such as data collection, self-adaptation, and safety systems, rely on accessibility of resources like networks, energy, sensing capabilities, and mobility. It examines challenges to accessibility including energy efficiency, big data issues, and networking, and argues these challenges must be addressed for MCPS to fulfill their potential.