72 million children fail to attend school worldwide. Colombia has 1.6 million uneducated children, half of which work on the streets. Our challenge is to denounce child labour in Colombia, but we faced a tactical problem. These children are not identified.We created a smartphone application that empowers every one to denounce child labour. What people did was to activate the app when they saw a child working on the streets. They had to Geotag the child, take a picture and enter the child’s information, this was uploaded to a website exclusively accessible to Fundacion Telefonica.