This repository contains the software developed to conduct the multimodal reaction-time experiments described in this deliverable. The framework supports the generation, synchronization, acquisition, and analysis of visual, auditory, and haptic stimuli under direct, encoded, and dynamic interaction conditions. It was designed to investigate human responsiveness within immersive communication environments and to quantify the impact of engineering delays introduced by sensing, rendering, communication, and processing pipelines. The implementation includes Unity-based applications, stimulus-generation modules, synchronization utilities, data-logging components, and post-processing scripts used to compute observed and effective reaction times. The framework supports both static experimental conditions and dynamic virtual-reality scenarios, enabling the evaluation of user perception and Quality of Experience under representative Tactile Internet use cases. The repository further contains data-analysis tools used to generate statistical summaries, demographic analyses, and visualizations presented throughout the study.