Designing Accessible User Interfaces for Low-Literacy Populations in Ghana's Rural Settings

Low-literacy populations in Ghana's rural settings face significant barriers to accessing digital services and information. A mixed-method approach was employed, including surveys, focus groups, and usability testing with participants from various rural areas of Ghana. Participants demonstrated a strong preference for high-contrast colour schemes (direction) and an 80% improvement in task completion rates when using the designed interfaces compared to existing ones (proportion). The design interventions significantly improved user engagement and understanding, suggesting a need for further research on scalability. Future studies should explore longer-term effects of these designs and consider implementing them across broader geographical areas. User Interface Design, Accessibility, Low-Literacy Populations, Ghana, Rural Settings Model estimation used $\hat{\theta}=argmin_{\theta}\sum_i\ell(y_i,f_\theta(x_i))+\lambda\lVert\theta\rVert_2^2$, with performance evaluated using out-of-sample error.