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Notice of retraction
Vol. 34, No. 8(3), S&M3042

Notice of retraction
Vol. 32, No. 8(2), S&M2292

Print: ISSN 0914-4935
Online: ISSN 2435-0869
Sensors and Materials
is an international peer-reviewed open access journal to provide a forum for researchers working in multidisciplinary fields of sensing technology.
Sensors and Materials
is covered by Science Citation Index Expanded (Clarivate Analytics), Scopus (Elsevier), and other databases.

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Sensors and Materials, Volume 35, Number 6(3) (2023)
Copyright(C) MYU K.K.
pp. 2081-2100
S&M3308 Technical Paper of Special Issue
https://doi.org/10.18494/SAM4289
Published: June 30, 2023

Applying Blockchain Technology and Facial Recognition to Unmanned Stores [PDF]

Pi-Yun Chen, Yu-Cheng Cheng, Neng-Sheng Pai, and Yi-Hsuan Chiang

(Received December 27, 2022; Accepted June 8, 2023)

Keywords: blockchain, sidechain, scalability, image recognition, FaceNet, encryption, decryption

In this study, we utilize blockchain to design an information transmission system for unmanned stores. It is aimed to create a network for exchanging information that does not rely on a third party, a so-called decentralized system. To achieve it, a peer-to-peer (P2P) network replaces the master–slave architecture and uses asymmetric encryption to identify the system users. To authenticate the identities of the stores’ customers, we use the face recognition network FaceNet developed by Google. FaceNet has several advantages that make it suitable for performing identity authentication in an unmanned store, including its high accuracy and convenience. A database of face images is required to perform facial recognition, but to address privacy concerns, every pixel in all images in the database is encrypted using the Rivest-Sharmir-Adleman (RSA) algorithm. The system proposed in this paper has three identity endpoints: the host end, the recognition end, and the client end. Messages are transmitted through a P2P network, and a directed acyclic graph is used to achieve message broadcasting while avoiding infinite loops when sending and receiving messages. A sidechain is used to change the structure and consensus mechanism of a traditional blockchain so that they can apply to more scenarios, thereby increasing scalability. The simulation results are displayed via the user interface.

Corresponding author: Neng-Sheng Pai


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This work is licensed under a Creative Commons Attribution 4.0 International License.

Cite this article
Pi-Yun Chen, Yu-Cheng Cheng, Neng-Sheng Pai, and Yi-Hsuan Chiang, Applying Blockchain Technology and Facial Recognition to Unmanned Stores, Sens. Mater., Vol. 35, No. 6, 2023, p. 2081-2100.



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