Summarize this article in one sentence.
Remarkably, even among all the states that require the signature of a notary, there are again many differences. For example: The state of Ohio requires that both buyer and seller sign in front of the notary, or at least inform the notary in person that they did sign the document. In North Carolina, only the signature of the seller must be notarized. Notaries in Montana can notarize open titles--that is, they can authorize the sale of a vehicle without a buyer ever being identified on any document. At the least, you will need the title, your state issued photo identification ("ID"), and the notary fee. ID must be issued by the state (such as a drivers license) or the military (such as a military ID card) and contain a photo. Use blue or black ink. If you are the seller, sign your name exactly as it is listed on the title. For example, if the title uses your middle initial, you should sign using your middle initial as well. If you are the buyer, sign your name exactly how you wish for it to appear on the title. For example, if you want to use your middle name, sign the title using your middle name. The Notary will sign and then stamp or seal the title, verifying that the signatures are those of the buyer and/or the seller. Notaries may charge a small fee for their services. In Ohio, the fee to have both signatures notarized on a car title would be $4. In California, the maximum fee that can be charged by a notary in this circumstance is $10.

Summary:
Determine who needs to be there. Take the required items to your notary appointment. Sign the title in front of the notary. Have the notary sign and seal or stamp the title. Pay the Notary fee.