HCI is an area which hasn’t seen a lot of advancement in 60 odd years of computer history. I believe that human experiences can be greatly influenced by the conditions that we build (infrastructure, environment, people etc.). Same applies to digital experiences – conditions that we build influence consumers experience of accessing a service/product/information at every touch point.
As a technologist, one of the most important condition that we could influence (by innovating) is the interface layer. Interfaces would undergo a huge change with the invasion of pervasive computing – visible / screen less – natural – gesture driven interfaces would take over and will drive the next gen changes in machine driven economy.