Personal healthcare has become the most important part of present human
life due to the COVID-19 pandemic. The awareness of one’s health is made easily
available by adopting IoT wearable devices like Fitbit, smart watches, oximeters, etc.
All these devices store sensitive information like a heartbeat, BP, distance traveled,
calories burnt, stress levels, location details, etc., and are stored in third-party data
servers. These servers are vulnerable to illegitimate users and also have a single point
of failure. The personal data of the individuals should be protected along with its
integrity. At the same time, the data stored in the servers should be decentralized to
overcome the problem of a single point of attack. The objective of this article is to
provide a framework that uses SHA-56 for generating the hash code and Blockchain
technology to store the data. Thus, providing privacy, security, and integrity for the
data.
Keywords: Blockchain, Fitbit, Fitbit data, Encryption, Hashing, IoT, Mining, Privacy, Security, Wearable devices.
