While the system offers an html-based response,Web browsers are not the most convenient interface for
mobile users, even with the consideration of HTML5 design principles. Native mobile applications offer
a higher level of convenience and superior user satisfaction within the limited mobile display. However,
native mobile applications are platform-dependent and compromise system portability. To that end, our
system prototype includes an android-based application (user interface) to access theWeb service resources.
The application has been developed using Android SDK. Figure 3 shows some screen shots from a health
professional’s application interface. Figurer 3a shows the list of patients currently being monitored by a
physician. When a patient name is selected, the application opens up a detailed activity control as shown
in Figure 3b. Each activity is linked to one of the Web service resources, offered from the patient’s mobile
device. For example, Vital Signs represents a Web service request to get a fresh real-time reading of the
patient’s vital signs. It’s worth noticing that caregivers can remotely change the thresholds for vital signs,
on which alerts are issued, by clicking on the Threasholds button.