## Appendix A
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline
**No.** & **Ref.** & **Country, Year** & **Technology Used** &
\begin{tabular}{c} **Physiological Signals** \\ **Sensed** \\ \end{tabular} & **Type of Device** & **Key Findings** \\ \hline
56. & [72] & Saudi Arabia, 2023 & \begin{tabular}{c} IoT, wearable sensors, \\ cloud computing \\ \end{tabular} & \
\begin{tabular}{c} Heart rate, blood \\ pressure, temperature \\ \end{tabular} & Wearable devices &
\begin{tabular}{c} Cloud computing \\ integration in wearable \\ health monitoring \\ systems enhances data \\ accessibility and \\ efficiency. \\ \end{tabular} \\ \hline
57. & [25] & India, 2023 & \begin{tabular}{c} Cloud computing, \\ wearable sensors \\ \end{tabular} & \
\begin{tabular}{c} Heart rate, blood \\ pressure, temperature \\ \end{tabular} & Wearable devices &
\begin{tabular}{c} Cloud computing \\ integration in wearable \\ health monitoring \\ health monitoring \\ systems enhances data \\ accessibility and \\ efficiency. \\ \end{tabular} \\ \hline
58. & [107] & Taiwan, 2023 & \begin{tabular}{c} IoT devices, smart \\ necklace, mobile \\ application \\ \end{tabular} & \begin{tabular}{c} Various physiological \\ signals \\ \end{tabular} & \
\begin{tabular}{c} Wearable devices, \\ mobile application \\ \end{tabular} &
\begin{tabular}{c} Cloud-based systems \\ provide scalable and \\ efficient health \\ monitoring solutions for \\ elderly care. \\ \end{tabular} \\ \hline
59. & [93] & Japan, 2023 & \begin{tabular}{c} Blockchain, Wear OS, \\ Bluetooth \\ \end{tabular} & \
\begin{tabular}{c} Various physiological \\ signals \\ \end{tabular} & Wearable devices &
\begin{tabular}{c} Provides real-time \\ positioning and \\ environmental \\ monitoring and \\ enhances caregiver \\ monitoring capabilities. \\ \end{tabular} \\ \hline
60. & [110] & Thailand, 2023 & \begin{tabular}{c} IoT, MAX30102, LM35, \\ NodeMCU ESP32 \\ DevKit, myHealth \\ application \\ \end{tabular} & \
\begin{tabular}{c} Pulse, oxygen \\ saturation, temperature \\ \end{tabular} & Wearable device, mobile &
\begin{tabular}{c} Monitors vital health \\ parameters and \\ provides accurate \\ measurements and \\ valuable functionalities. \\ \end{tabular} \\ \hline
61. & [26] & Philippines, 2023 & Various technologies & \
\begin{tabular}{c} Various physiological \\ signals \\ \end{tabular} & Wearable devices &
\begin{tabular}{c} Provides real-time \\ health monitoring and \\ improves elderly care. \\ \end{tabular} \\ \hline
62. & [63] & \begin{tabular}{c} Handuras, 2023 \\ \end{tabular} & \begin{tabular}{c} Smart home technology, \\ IoT, AI \\ \end{tabular} & \begin{tabular}{c} Heart rate, movement, \\ fall detection \\ \end{tabular} & \
\begin{tabular}{c} Home-based sensors, \\ wearable devices \\ \end{tabular} &
\begin{tabular}{c} Smart home systems \\ provide efficient and \\ real-time health \\ monitoring, enhancing \\ elderly care. \\ \end{tabular} \\ \hline
63. & [76] & India, 2023 & \begin{tabular}{c} Cloud computing, \\ wearable sensors \\ \end{tabular} & \
\begin{tabular}{c} Heart rate, blood \\ pressure, temperature \\ \end{tabular} & Wearable devices &
\begin{tabular}{c} Wearable devices \\ wearable technology \\ provide scalable and \\ efficient health \\ monitoring solutions. \\ \end{tabular} \\ \hline
64. & [117] & China, 2023 & Wearable sensors, IoT & \
\begin{tabular}{c} Heart rate, blood \\ pressure, temperature \\ \end{tabular} & Wearable devices &
\begin{tabular}{c} Technologies \\ awareness and IoT \\ enhance elderly health \\ monitoring. \\ \end{tabular} \\ \hline
65. & [121] & India, 2023 & Wearable sensors, IoT & \
\begin{tabular}{c} Heart rate, blood \\ pressure, temperature \\ \end{tabular} & Wearable devices &
\begin{tabular}{c} Wearable health \\ monitoring systems \\ provide comprehensive \\ health data for elderly care. \\ \end{tabular} \\ \hline
66. & [39] & China, 2023 & IoT, wearable sensors & \
\begin{tabular}{c} Heart rate, blood \\ pressure, temperature \\ \end{tabular} & Wearable devices &
\begin{tabular}{c} Wearable devices \\ systems enhance elderly \\ care through real-time \\ data. \\ \end{tabular} \\ \hline
67. & [92] & Brazil, 2023 & Wearable sensors, IoT & \
\begin{tabular}{c} Heart rate, blood \\ pressure, temperature \\ \end{tabular} & Wearable devices &
\begin{tabular}{c} Developed a prototype \\ system for healthcare \\ monitoring that uses \\ wearable devices to \\ collect physiological \\ data from patients. \\ \end{tabular} \\ \hline \hline \end{tabular}
\end{table}