[Retracted] Biometric Authentication for Intelligent and Privacy-Preserving Healthcare Systems

Table 3

A summary of the protocol, results, and key contributions from authentication and privacy-preserving healthcare systems.

Reference	Year	Protocol	Results	Key contributions
[1]	2019	Health screening for people who have diabetes	Smart services do the whole screening autonomously	They do not describe how a procedure is performed but why, when, where, and by whom the care is given
[27]	2015	Security	Promotes public confidence in healthcare services	Provides a secure environment for people using the services
[35]	2019	Decentralized privacy-preserving healthcare blockchain for IoT	Secures data transfers and logging of data and storage on the blockchain	Security through blockchain
[36]	2017	Radiofrequency identification	Tracks hospital supplies, medical equipment, medications	Privacy-preserving access controls
[12]	2013	Wireless medical sensor network	Sensitive patient information is sent through the open air.	The lightweight encryption algorithm is proposed to secure communication between the sensor node and the Sharemind system.