Lesson 5 - This free
High-End Cloud Service: Multimodal Client Interaction course
is about many interaction technologies which require artificial intelligence.  High-performance servers coupled with mobile clients that handle the fast input data capture and transfer offer an attractive solution.  To develop an interactive image-based service, the developer first registers images of target objects to be recognized in the server ahead of time. 

These input target images are trained off-line on the server so that they can be recognized well from different viewpoints at different scales and lighting conditions.Different models and types of devices can use the same cloud applications and services with interaction customized for users and their particular devices.