Can the use of crowdsourcing be used to support public health emergencies.? Knowing where people live and how many of them is an important factor to support field operations during emergencies. This presentation compares the pros and cons of mapathons with automated techniques of feature extraction available in the market. -------------------------------------------------------------------------------------------------------------------------- Follow us on Social Media! Twitter: https://twitter.com/Esri Facebook: https://facebook.com/EsriGIS LinkedIn: https://www.linkedin.com/company/esri Instagram: https://www.instagram.com/esrigram The Science of Where: http://www.esri.com