Lenovo Smart Cast: Laser Projection Smartphone Demo and Overview. Lenovo Smart cast is a new innovative technology where users can project a keyboard or an interactive display on any flat surface. Users can use the projection to interact with the smartphone. They can use it as a second display, use it as a virtual laser keyboard or play games on it. The smartphone can be used to project on a table or on a wall. Users can view videos or movies using the projector which can project upto 50 inch screen. Subscribe to our channel for detailed Reviews, Quick Review, Benchmarks, Gaming, Unboxing, Features and Overview of Various Gadgets like Smartphones, Tablets etc.