Digital Twins are already widely used in Manufacturing industry and they are starting to be used in several other areas, including healthcare, constructions, infrastructure operation, smart cities ? A few are also starting to consider them to mirror people, Human Digital Twins, and the European Commission has launched a group to look into the personal ownership of human digital twins (Personal Digital Twins). Furthermore, IEEE Digital Reality Initiative has been looking into the possibility of modelling knowledge through a Cognitive Digital Twin, As Digital Twins expand in characteristics and in their application they are also requiring more and more communication support. At the same time they may be used to support the operation of a telecommunication network. Researchers looking into 6G design are considering the use of Digital Twins as one of the building blocks.

The talk will present the present status of use and research and provides some food for thought for people working in the telecommunication areas.