A "Paper key" typically refers to a way to securely store cryptographic keys in a physical, written form. This method is often used in the context of cryptocurrency wallets, specifically for storing private keys that give access to crypto assets. ### Key Features of Paper Keys: 1. **Security**: Paper keys are immune to online hacking threats since they are stored offline. However, they need to be kept in a secure place to avoid physical theft, damage, or loss.
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