1930 AbstrAct Access to mobile data and messages is essential in healthcare environment as patients and health- care providers are mobile. This is inline with the need of ubiquitous computing in everyday life. Mobile and wireless devices can assist in ensuring patient’s safety by providing easy availability of the data at the point of care. Portability and acces- sibility of these devices enhances use of them in healthcare environment. However, data integrity and confdentiality of information in them need to be ensured to provide safe, effective and ef- fcient healthcare. Mobile healthcare involves conducting healthcare related activities through using mobile devices such as a smart phone, Personal digital assistant (PDA), wireless enabled computer, iPod and so on. Mobile computing is suitable for healthcare as healthcare providers are mobile. These would be suitable for conducting patient’s healthcare activities in emergencies, ward rounds, homecare, chronic disease management, conducting clinical trials, and so on. There are various projects using mobile devices to enhance patient’s care. With the advancement of medical informatics, telemedicine and information tech- nology, mobile data devices play an enormous role in healthcare system. In this chapter, we outline the need of mobile devices in healthcare, usage of these devices, underlying technology and applications, importance of security of these devices, securing mobile data communication Chapter 7.5 Securing Mobile Data Computing in Healthcare Willy Susilo University of Wollongong, Australia Khin Than Win University of Wollongong, Australia Copyright © 2009, IGI Global, distributing in print or electronic forms without written permission of IGI Global is prohibited.