Sony Computer Science Laboratories, Inc. (hereafter “Sony CSL”) has developed a contactless IC card type cryptocurrency “hardware wallet technology *1 ” by utilizing Sony Corporation’s IC card technology. Currently, many cryptocurrency users are trading cryptocurrencies using online wallets *2 from the locations where they initially purchased their cryptocurrencies. When a user owns a cryptocurrency, what they actually own is not the cryptocurrency itself, but a private key *3 that allows you to freely trade that cryptocurrency. If you own the private key, you can freely use the cryptocurrency associated with the private key. If that private key is known to others, it is possible that others will use the cryptocurrency associated with the private key. In online wallets such as cryptocurrency exchange websites or services, the private key is managed by the online wallet operator, not the user, meaning that users are able to access to the wallet it...
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