In this case, the probability of occurrence may be close to zero. In principle, fingerprints are unique and can represent a person's identity, so they are effective.

First, purely theoretical discussion, notarization documents, as authoritative notarization procedures, are flawed and do not affect the effectiveness of documents;

Second, notarization requires the presence of two notaries, which is generally a process of audio and video recording. It is unlikely that there is no signature.

Of course, if notarization is only to prove that the contract text is true, it is not to notarize the authenticity of the contract content. Then we need to check whether the original contract has come into effect. That is the validity of the original document, and has nothing to do with notarization. Notarization only proves that the original documents are true. As for whether the original content is legal and valid, it has nothing to do with notarization. This kind of situation is unlikely to happen, because notarization is generally to notarize the authenticity and legality of the contents of the contract.