A library card is not acceptable for verifying identity.
Library cards aren't usually an acceptable document for verifying identity. This is because library cards typically only have the user's name (which may only be written on the card), and a library card number; they do not include important, verifiable information, such as a photograph, birthdate, or address.
Generally library cards are not acceptable as a form for verifying identity. One of the main reasons for this is that library cards often do not contain sufficient information about the cardholder - details such as name (this excludes any signature(s) that may be added to the card), address, or birthdate. As well, library cards don't typically include a photo.
If you notarize a document in SD, you are verifying the identity of the person signing the document in SD. Where the document gets filed afterward is not the notary's concern.
An identity document is any document which may be used to verify aspects of a person's personal identity.
Verify the customer's identity