What would happen if the digital traces of our childhood were available today? This is a key question for generations to come. Today the lived experience of childhood is being transformed by the production of personally identifying digital data. From doctor’s appointments to toys, from social media to mobile apps, children’s everyday life is recorded, stored and shared in ways that were not possible before. This website, is based on the Child | Data | Citizen research project and responds to concerns about children’s data traces and their social and political implications in age of big data and artificial intelligence.