This thesis studies the potential improvement of the children pickup in schools using a whole new system that allows parents to communicate to the schools the information of the authorized people to pick up their children in a secure, flexible and objective way. After reaching a collaboration agreement with Sant Nicolau school in Sabadell it has been possible to design a MVP version of the system to be used in a pilot test. This thesis details the main functionalities of the different parts of the system which is formed by a mobile application to be used by the parents and another application to be used by school.