The Community Rehabilitation Services Support Center (CRSSC) is a specialized center within the Hospital Authority that connects patients with special needs with the application of innovative and interdisciplinary technology to advancing ability, restore hope and enrich life choices. Our interdisciplinary team of therapists and engineers provide tailor-made solutions for the activities of daily living of people with severe disabilities. One of our main services is the use of digital technologies to enhance communication and interaction with people and the environment. Human-Machine Interface (HMI) is our latest development, which involves the study of the design and use of computer technology, with an emphasis on the interface between a human (user) and a computer/machine. In this presentation, we will share our experience using innovative or self-invented devices to facilitate human-computer interaction, thereby increasing independence in everyday life.