I began the project by analysing existing products and their usage contexts. My research revealed a need to enhance accessibility to reduce barriers for users engaging in CPR training. Additionally, it is essential to bridge the gaps between training and actual clinical scenarios to make the training sessions more effective. Live feedback during CPR training significantly influences its effectiveness. Another important observation that came to light during the research was that the users were focusing on feedback interfaces while ignoring the patients’ vital signs during training. This could reinforce incorrect practices in users. To address these needs, I developed full-scale experience prototypes to test and validate interactions with experts. Using the Wizard of Oz prototyping technique, I simulated various methods of providing feedback to users, making the process more realistic and less speculative. The result of the process is the Resusci Cart, a mobile simulation station designed to make CPR training more engaging by projecting live feedback directly onto the manikins through projections. By displaying feedback on the manikin, the user’s focus remains on the patient, simulating the vital sign checks required in a clinical situation. Thanks to its mobility, users can effortlessly move it within the hospital for private practice sessions. The compact form and reduced footprint facilitate its use in various settings without occupying excessive space. The feedback interfaces are ergonomically positioned to enable users to practice and retain their skills effectively. Resusci Cart enhances the in-hospital CPR training experience by making it more accessible and engaging for learners.