A Digital Twin is a digital representation of an identity, being a human, a device or a digital user (such as a chatbot). It may have properties or attributes reflecting the identity it represents, like name, contact info, identifiers or other information to provide a more or less complete picture for the representation. Most humans already have multiple Digital Twins, often used in different contexts, for instance at work for logging in and using corporate services or keeping in touch with friends on social medias.