Yes, my friend. An individual can certainly use multi-signatures in Bitcoin to add an extra layer of security to their funds.

Multi-signature (multi-sig) is a feature of Bitcoin that allows multiple private keys to be required to authorize a transaction. This means that funds associated with a multi-sig address cannot be spent unless multiple private keys are used to sign the transaction, which adds an extra layer of security to the funds.

An individual can set up a multi-sig address simply by requiring multiple private keys to sign transactions. For example, a 2-of-2 multi-sig address could require two private keys, which can be controlled by a single individual, to sign transactions. This would effectively function as a two-factor authentication (2FA) system for Bitcoin transactions, adding an extra layer of security to the funds associated with the address.

Overall, multi-signatures are a powerful feature of Bitcoin that allow for added security and control over funds, and they can be used by individuals or organizations to improve the overall security of their Bitcoin wallets and transactions.