A crypto wallet has both public and private keys. The public key, which acts as your identity in crypto space, isn’t tied to any specific information about you; it’s just an alphanumeric string that allows people to send money to your wallet or add it to their address book so they can see where their payments are coming from.
Meanwhile, your private key is linked directly to your wallet and gives you access to its funds. If someone has access to your private key, they have control over all of its contents — including bitcoin (BTC), ether (ETH) and other types of cryptocurrency stored in that particular address. Protecting that private key should be one of your biggest priorities! Just like physical wallets, losing your crypto wallet means losing everything inside it forever.