  Health data is a sensitive category of personal data. It might result in a
high risk to individual and health information handling rights and
opportunities unless there is a palatable defense. Reasonable security
standards are needed to protect electronic health records (EHR). All personal
data handling needs adequate explanation. Maintaining access to medical data
even in the developing world would favor health and well-being across the
world. Unfortunately, there are still countries that hinder the portability of
medical records. Numerous occurrences have shown that it still takes weeks for
the medical data to be ported from one general physician (GP) to another. Cross
border portability is nearly impossible due to the lack of technical
infrastructure and standardization. We demonstrate the difficulty of the
portability of medical records with some example case studies as a
collaborative engagement exercise through a data mapping process to describe
how different people and datapoints interact and evaluate EHR portability
techniques. We then propose a blockchain-based EHR system that allows secure,
and cross border sharing of medical data. The ethical and technical challenges
around having such a system have also been discussed in this study.
