Implementation of Supply Chain Management System to Prevent Counterfeit Using IoT device and Blockchain

Currently, supply chain management (SCM) manages products by externally attaching barcodes, RFID, etc. However, if RFID is physically peeled off from the product, it cannot be managed. As one of the solutions, SCM using physically unclonable function (PUF) is being considered, especially for devices such as semiconductor chips, genuine devices and counterfeit devices. An individual identification system has been devised that uses technology to identify the device. However, since PUF technology deals with minute physical features unique to the device, considerable difficulties remain in its practical application. Using a new authenticity judgment that overcomes the problems, we have realized and implemented SCM system using IoT device and blockchain that performs the same functions as PUF even for devices and substances for which PUF technology has not been established. We describe the evaluation and future of the implemented system.