2.1. Instant Data Access
Mobile hosts are typically equipped with multiple wireless network interfaces and have the ability to communicate over heterogeneous networks such as 3G, WiFi, Bluetooth, etc. Mobile Web services provide a natural opportunity for enabling instant access to real-time data. Vital signs can be collected by medical sensors and transmitted via a short-range link (ex. Bluetooth) to the a patient’s mobile device. Hence, what comes after is the responsibility of the mobile device and the system it hosts. Mobile Web services, addi- tionally, can provide real-time access to continuously changing context attributes, such as patient location and other patient-related environment context attributes such as surrounding oxygen level.