After having presented the technical architecture of our prototype, we can now go back to the requirements listed
in Section II and discuss how MyPHRMachines addresses explicitly all of them.
About requirement RA1, PHR data can be stored by patients using the cloud storage provided by MyPHRMachines. When
required, PHR data can be easily exposed to care institutions, e.g. a physician, as long as an Internet connection and a Javaenabled browser are available. As demonstrated before, access to VMs is granted by forwarding a ciphered VM identifier by e-mail to care institutions. About requirement RA2, PHR data will be available in principle forever within MyPHRMachines to be shared among patients and care institutions. Moreover, the application software required to view and analyze such data will also be always available. In particular, MyPHRMachines enables the virtualization of any type of operating systems and application software. These will remain available to patients and care institutions even when they become no longer in use or accepted in practice.