Does it matter if the handwritten signature is photographed by others?
Have an impact. Pictures with handwritten signatures can enter the signature column of any contract, which has great potential risks to personal interests. Signature and seal have legal effect. In actual civil activities, there are usually other evidences to prove it. Important civil activities are generally confirmed by seals, notarization and other means. In criminal or some civil activities, fingerprints are often added to prove that they are the same as signatures.