Please note that, this feature is currently still in its experimental stage, and not fully integrated, meaning you can install the Web3Signer currently via Custom Installation, but you will have to modify the necessary connections manually.
The Web3Signer separates key management from block creation and consensus validation by signing blocks using a secure private key. It enables you to store your keys and call upon them in order to sign relevant data, such as new blocks. This separation of private keys from the client adds a layer of security to operating in a given protocol and simplifies the burden of key management for the user.