Cam Scroller is an open-source Chrome extension that uses your webcam and deeplearn.js to enable scrolling through webpages using custom gestures that you define. Check out the code at https://github.com/PAIR-code/cam-scroller It makes use of the deeplearn.js KNN image classifier. In doing so, your webcam images are processed locally on your machine and at no time is any information collected or sent externally. This simple Chrome extension is meant to show, through a minimal example, the types of experiences that can be enabled through the use of browser-based machine learning. This is not an officially supported Google product.