You are limited to your own state. The document signer must always appear before you for the notarization. Remember that the primary function of a notary public is to prevent fraud. Notaries do this by requiring the personal physical presence of the signer and making a positive identification of the signer. Often, forgeries occur because the notary fails to require the document signer to be present for the notarization.
Some states provide strong criminal or civil penalties for violating the presence requirement.
Such violation is also grounds for disciplinary action by state officials, including the possibility of suspension from office or revocation of your notary commission. Additionally, a court could hold you liable for any damages sustained by the injured party as a result of forgery or fraud. Notaries may not notarize their own signature. In fact, doing so is a criminal penalty in many states. Some states actually prohibit notaries from notarizing for their family members.