Paper Wallets
Paper wallets are a physical form of cryptocurrency storage that involves printing private keys and public addresses on paper for offline security. They are used to hold cryptocurrencies like Bitcoin or Ethereum without relying on digital devices, making them immune to online hacking. This method is considered a type of cold storage, as the keys are kept entirely offline to prevent unauthorized access.
Developers should learn about paper wallets when building or auditing cryptocurrency applications that require secure, long-term storage solutions, such as in wallets, exchanges, or blockchain-based systems. They are particularly useful for scenarios where high-value assets need protection from cyber threats, like in personal savings or institutional custody, but require careful handling to avoid physical damage or loss.