There are three main areas of interest. The second point of interest is the idea of virtual reality drugs. Thirdly, the impact of computer technology on the society in general. The DBCI is the most common type of cybernetic hardware used in the future. DBCI have become the standard computer interface in the future.
People recieve a DBCI implant near either the left or right temples on their heads.
Each person has a three dimensional icon that represents them in cyber space. There was a computer system used in a hospital in the book. This system had a virtual reality hospital that represented the hospital records database. There was an interesting idea that was briefly touched by the book. The idea of an actual on board computer in the brain.