Which of the following methods can be used to identify the signer in Illinois?

The selected method for identifying the signer in Illinois is comprehensive and aligns with the regulations governing notarial acts. Personal knowledge is key in verifying identity because it relies on the notary's acquaintance with the individual, ensuring that they can affirm the person's identity based on prior interactions.

The inspection of a valid ID serves as an additional verification step, allowing the notary to confirm that the individual is who they claim to be through an official form of identification. This is particularly important because it provides an objective means of identification that can be visually verified.

Involving a credible witness's oath adds another layer of security. A credible witness is someone who knows the signer personally and can vouch for their identity without having a vested interest in the transaction. This method is especially useful when the signer cannot present valid identification or when further verification is needed.

By combining these three methods—personal knowledge, valid identification, and a credible witness's oath—this approach ensures a thorough and reliable identification process in compliance with Illinois notary regulations, enhancing the integrity of the notarization process.