Which document type would NOT typically require any thumbprint when signed?

Wills typically do not require a thumbprint when signed because they are generally self-proving documents that are executed in the presence of witnesses, rather than a notary. In most jurisdictions, including California, the signing of a will focuses on the testator's intent and their competency, along with the presence of witnesses who can attest to the signing. Notaries are not usually involved in the execution of wills, which distinguishes them from other documents that may require notarization and, consequently, a thumbprint for identification and record-keeping purposes.

On the other hand, documents like Power of Attorney, Trust documents, and Deeds often involve significant legal implications and transfers of authority or property, leading to a higher potential for fraud. As a result, California law typically requires a thumbprint for these types of documents when they are notarized, serving as an additional layer of security to help verify the identity of the individuals involved.