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Emergency Medical Access Control System Based on Public Blockchain.

Taisei Takahashi1, Yan Zhihao2, Kazumasa Omote3

  • 1Faculty of Engineering, Information and Systems, University of Tsukuba, Ibaraki, Japan. taisei.takahashi@risk.tsukuba.ac.jp.

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Summary
This summary is machine-generated.

This study introduces a novel emergency access control system for global electronic medical records using a public blockchain. It enables secure, on-demand sharing of patient health information in emergencies, even when traveling abroad.

Keywords:
BlockchainEmergency responseMedical information sharingSmart contract

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Area of Science:

  • Computer Science
  • Medical Informatics
  • Blockchain Technology

Background:

  • Electronic medical records (EMRs) face challenges in emergency sharing, especially for patients unable to provide consent.
  • Existing solutions like permissioned blockchains have limitations in participation and scope.
  • Patients traveling abroad or becoming incapacitated pose significant barriers to accessing critical health data.

Purpose of the Study:

  • To develop an emergency access control system for a global electronic medical information system.
  • To enable secure and immediate sharing of patient health records in critical situations.
  • To overcome limitations of current EMR sharing mechanisms.

Main Methods:

  • Utilized a public blockchain for universal participation in the electronic medical information system.
  • Proposed a patient-worn pendant with tamper-proof and biometric authentication.
  • Implemented a secure channel using the Diffie-Hellman (DH) key exchange protocol for data sharing between family doctors and emergency doctors.
  • Conducted tests on public blockchain transaction fees to assess practicality.

Main Results:

  • Demonstrated a practical system for emergency access to electronic medical records.
  • Biometric authentication on the pendant prevents unauthorized access if stolen.
  • The system facilitates secure health record sharing via DH key exchange.
  • Public blockchain transaction fees were evaluated and found to be feasible.

Conclusions:

  • The proposed system offers a viable solution for global emergency medical record access.
  • Patient-worn biometric devices enhance security and control over medical information.
  • Public blockchain technology can support secure and accessible emergency healthcare data sharing.