# A Systematic Review of the Usability of Telemedicine Interface Design for Older Adults
## 4 Discussion
Integrate multi-sensory feedback (visual, auditory, and tactile) [54; 70] and health reminders, ensure clear system feedback, provide voice or video communication options, obtain patient consent for video features, and send reminders before session completion to enhance user engagement and satisfaction [62]. _(3) Information visualization design:_ When elderly patients need to make appointments without knowing the specific department or doctor, the system can guide them by allowing them to select a body part on a rotatable and scalable 3D model for detailed observation. The system should then recommend relevant specialists. Users should have control over the amount of information displayed about doctors and be able to easily comprehend health data, progress, and goals through data visualization in user reports [62]. _(4) Personalized settings:_ Allow users to manage their health information, customize fonts and color schemes, and arrange homepage functions according to their individual needs. Also, users should be allowed to customize frequently used features to reduce distractions [89]. This customization facilitates quicker access to desired functions [69]. Instructional videos and brief tutorials can help elderly users learn the interface more efficiently. Accessible help resources, expanded service content, and improved effectiveness will promote mobile health service adoption [81]. _(5) Social interaction and emotional support:_ To alleviate technological anxiety and reduce the lengthy learning curve for elderly users [58], applications should enable seniors to grant partial access to family members or caregivers. This feature provides simple social connection options that help them stay in touch with family, friends, and healthcare providers, fostering a sense of security [83]. A warm and friendly interface with compassionate language and supportive interactions can mitigate feelings of loneliness and anxiety [70]. _(6) Improving health literacy:_ Since many elderly users are unfamiliar with technology and exhibit cognitive differences, telemedicine apps should offer tutorials, active help [14], and training specifically designed for older adults [68; 75] to assist them in navigating the system effectively despite cognitive and physical challenges [63]. Research indicates that older patients spend more time using smartphones than younger patients [58]. Declining cognition, memory issues, and reduced finger sensitivity in the elderly can lead to increased errors, thus proper guidance and public awareness through mobile app marketing are essential for successful usage. Face-to-face assistance can also reduce technological anxiety and improve tech literacy [75; 83]. Health data visualizations should align with users' literacy levels [18]. Positive correlations exist between attitudes toward online health information, confidence, understanding, and motivation, and usability ratings of the learning platform. This indicates that eHealth literacy influences evaluations of eHealth coaches [87]. Finally, older individuals often overlook their privacy concerns [57]. It is crucial to strengthen user privacy and security by incorporating emergency contact functions, real-time monitoring capabilities, and integrating service platform resources. When designing mobile health research, it is important to consider the participants' views on privacy, data confidentiality, and their willingness to share research results [64]. The selected studies reveal significant qualitative and quantitative differences, including the sample size, study setting, and population characteristics, for example, sample sizes range from small groups of 4 participants (e.g., Sweden-based fall prevention interventions) [65] to larger studies with over 600 participants (e.g., Saudi Arabia-based mobile user interface studies) [54].