A network of users is a group of people who have agreed to participate regularly in user studies. This enables researchers to have access to users who are representative of a target group of technology in development. User recruitment turns out much quicker and easier for researchers. Fraunhofer Portugal AICOS has its own network of users. Some practice Tai Chi, others prefer to play cards, some have the latest news, others remain faithful to the traditional cell phone, some take care of their grandchildren and the house and those who never miss an opportunity to travel. It is this diversity that makes our user network so special. We get different perspectives that we incorporate to create truly meaningful technology for people.