Feasibility of Unsupervised Therapy After Neurological or Orthopaedical Injury in the Home Setting With a Hand Rehabilitation Device (ReHandyBot) and an Assistive Smartphone Application (RehabCoach)

The goal of this clinical trial is to evaluate whether using the ReHandyBot hand rehabilitation device together with the RehabCoach smartphone app can support safe, independent, and effective home therapy in patients with stroke, traumatic brain injury, or orthopedic problems. The main questions it aims to answer are: * Can patients safely and independently use ReHandyBot and RehabCoach after leaving the clinic? * Will patients follow the recommended daily therapy schedule when using these tools at home? * How do patients experience the usability and acceptability of ReHandyBot and RehabCoach in everyday life? * Can this type of home-based therapy be extended to populations beyond stroke, such as traumatic brain injury and orthopedic patients? Participants will: * Complete a screening and baseline assessment with a therapist. * Use ReHandyBot in a supervised phase at the clinic (3 sessions of 30 minutes). * Continue with a minimally supervised phase at the clinic (3-7 sessions of 30 minutes, with daily app use). * If ready, enter the unsupervised phase, taking ReHandyBot home for daily 30-minute training sessions, supported by RehabCoach. * Return for a final assessment including clinical and robotic evaluations and usability feedback.