Android Canvas: Building One of the World's Largest Interactive Data Visualization Experiences

What would it look like to convert an Android app to an 80-inch touchscreen? Supratim Chakraborty was able to provide great insight and answer the first question when he created VizInteract, a data visualization tool that can work with large displays. Vanilla AOSP is required to send a video stream, read sequential multi-touch events and to send them. A traditional Android Tablet with HDMI display cannot be used for this purpose. Their team used the Android-x86 project to solve this problem. They also created an Infrared touch screen overlay that would allow Oreo to run on large displays and support 12 touch points. Supratim will present how the Android-x86 kernel was modified in order to support an IR touch overlay driver. He will also share lessons learned from creating multi-touch experiences for large surfaces, and the challenges that this presents. The UX changes that allow dragging, rotation and pinch to zoom gestures on an 80 inch tablet vs a regular Android tablet. Also, the limitations of Canvas API and large amounts of numerical data processing.