Signing on a web3 wallet means you sign a transaction before it is sent to the blockchain network. This makes sure that the transaction is real and approved by the wallet owner.
To sign a transaction, the wallet owner uses a private key, which is a special code that only they know. This key creates a unique digital signature for each transaction. The signature is then sent with the transaction to the blockchain network for verification. If the signature is right, the transaction is added to the blockchain forever.
Signing on a web3 wallet is important because it keeps your transactions safe and stops anyone else from changing them. This is really important in the blockchain world where security is a big concern.
In short, signing on a web3 wallet is when you use your private key to sign a transaction before it is sent to the blockchain network. This keeps your transaction safe and approved by you.