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A hardware wallet is an electronic device that stores the private key of our address and that signs the transactions through the device itself, thus having additional security when working with cryptocurrencies. In this guide we will see how to use the Ledger Nano S Plus and what precautions we must keep in mind when buying this device. The first thing to check before opening the package is to identify any tampering with the package, this is because in the past it has happened that some criminals had compromised the ledger with malicious software.