Unverified50% confidenceFactExact time
Pasting a signature image into a PDF is only a visual signature; it cannot prove the signer's identity, nor can it prevent the content from being modified.
1
Sources
50%
Confidence
Long-term
Relevance
10/12/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedSigned photos require supporting verification tools and platform support; otherwise, ordinary users have no way to verify their authenticity.73% similarUnverifiedDigitally signing tool definitions does not solve the poisoning problem, because signatures provide integrity and authorship attribution rather than security—a signed description can still carry malicious instructions.68% similarUnverifiedElectronic signature is a broader concept, and any way of expressing signing intent in electronic form can be included in it, including clicking to agree, typing a name, or inserting a signature image.64% similar
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