As the number of Internet of Things (IoT) devices increases, Gift Card services expand and illegal hacking and infringement methods become more sophisticated, an effective solution for blockchain technology is required as a fundamental solution to security threats.In this paper, we develop the security module of an IoT device based on blockchain te
There are problems of poor user experience,inconsistent management,and Can Punch / Bottle Openers potential security risks in energy information system.It is urgent to study the issue of unified identity authentication between various electronic channels from the source to achieve unified management of multiple electronic service channels and servi
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