Design and development of augmented reality hardware and software; Design and development of virtual reality hardware and software; Design and development of extended reality hardware and software; Design and development of mixed reality hardware and software; Design and development of 3D hardware and software; Software development; Design and development of interactive multimedia software; Software as a service (SAAS) services featuring software development tools for the creation of applications for mobile devices, virtual reality (VR), extended reality (XR), mixed reality (MR) and augmented reality (AR); Computer software consulting in the field of augmented reality applications for retail service providers; Computer software consulting in the field of mixed reality applications for retail service providers; Computer software consulting in the field of extended reality applications for retail service providers; Scientific and technological services and research and design relating thereto, namely, scientific and technological research relating to mixed, extended, virtual and augmented reality