The results revealed high levels of satisfaction, with mean scores of 3.76 for design, 3.89 for usability, and 3.85 for overall acceptance. These findings suggest that the jacket meets user expectations and demonstrates significant potential to enhance outdoor safety for the target population. The practical implications of the jacket include reducing the vulnerability of people with hearing loss and non-verbal impairments in emergencies by providing reliable communication and location tracking. Moreover, it underscores the importance of user-centred design in assistive technology, paving the way for further innovations in wearable safety devices for individuals with disabilities. By leveraging the 4IR technologies, this multifunctional jacket addresses critical safety needs and contributes to improving the independence and well-being of individuals in modern society.
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