1 Introduction
Virtual reality applications tend to include more and more users, raising the question of data security in the virtual environments and the easy management of access and rights in a social environment such as the Metaverse. While there are many families of authentication methods that could be used in 3D user interfaces, many of them have too important drawbacks to be pertinent; biometrics are incompatible with many devices; and alphanumeric passwords are usually defined as simple by users, reducing their usefulness for security purposes [1].