What Is a Wet Signature?
Learn what a wet signature is, how it differs from digital signatures, and when it is still used in modern document workflows.
What Is a Wet Signature? (Quick Answer)
A wet signature is a handwritten signature made with ink on paper.
It is called “wet” because the ink was originally wet when the signature was applied.
Wet signatures are still used for:
- Legal documents
- Contracts
- Government forms
- Physical approvals
- Documents that require original signatures
Even with digital workflows, some situations still call for a handwritten signature.
Why Is It Called a Wet Signature?
The term comes from the fact that the ink is physically applied to paper.
Before the ink dries, the signature is literally wet.
That simple phrase eventually became the common name for handwritten signatures on paper.
It sounds old fashioned because it is.
But the term is still widely used today.
How a Wet Signature Differs From a Digital Signature
A wet signature is written by hand on a physical document.
A digital signature is created electronically and uses cryptographic verification.
The main difference is:
- Wet signatures are physical
- Digital signatures are electronic and verifiable
Wet signatures are often easier to understand visually.
Digital signatures are often stronger for tracking and verification.
How a Wet Signature Differs From an E-Signature
An e-signature is a broad term for any electronic signature.
A wet signature is not electronic at all.
It is written directly on paper.
That means:
- A scanned handwritten signature is not the same as the original wet signature
- A typed name is not a wet signature
- A digital signature is not a wet signature
The difference matters when legal or compliance rules are involved.
When Wet Signatures Are Still Used
Wet signatures are still common in situations such as:
- Notarized documents
- Certain legal filings
- In-person signings
- Medical or institutional paperwork
- Documents requiring original ink signatures
Some processes still rely on paper because of policy, tradition, or legal requirements.
Why People Still Use Wet Signatures
Wet signatures remain useful because they are familiar and direct.
They can be helpful when:
- A document is signed in person
- A physical original is required
- A process has not moved online
- The signer prefers paper
In some workflows, a handwritten signature is still the simplest option.
Wet Signature vs Scanned Signature
A scanned signature is a digital copy of a handwritten signature.
It may look like a wet signature, but it is not the original ink signature.
This distinction matters because a scanned image:
- Can be copied more easily
- Does not prove the paper was signed in front of someone
- Does not provide cryptographic verification
It can still be useful, but it is not the same as signing in ink.
Are Wet Signatures Secure?
Wet signatures can be secure in some contexts, but they also have limitations.
They may be:
- Harder to verify remotely
- Easier to forge than digital signatures in some cases
- Slower to process
- Harder to archive and search
That is one reason many organizations are moving toward digital workflows.
Wet Signatures and PDFs
Wet signatures are often turned into PDFs after signing.
That lets people:
- Store the signed document
- Share it electronically
- Archive it for future use
- Print it when needed
If the document must remain legally tied to the original ink signature, the paper original may still matter.
When to Keep the Paper Original
In some cases, the original signed paper document should be kept.
That may be important for:
- Legal evidence
- Compliance records
- Notarized forms
- Original contract storage
If the paper original matters, a scanned PDF should be treated as a copy unless the workflow says otherwise.
Best Practice Summary
If you want the short version:
- A wet signature is a handwritten ink signature on paper
- It is different from digital and electronic signatures
- It is still used in some legal and physical workflows
- Scanned copies are not the same as the original
- PDFs are often used to store or share signed paper documents
That makes wet signatures still relevant, even in digital-first workflows.
The Future of Wet Signatures
Wet signatures are likely to keep fading in some workflows as digital signing becomes more common.
But they will not disappear completely.
Some documents will always need physical originals, in-person signing, or handwritten verification.
The main trend is simple.
More work is moving digital, but paper signatures still matter in certain situations.
FAQ
What is a wet signature?
A wet signature is a handwritten signature made with ink on paper.
Why is it called a wet signature?
Because the ink is initially wet when the signature is applied.
Is a scanned signature a wet signature?
No. A scanned signature is a digital copy of a handwritten signature, not the original ink signature.
How is a wet signature different from a digital signature?
A wet signature is physical, while a digital signature is electronic and cryptographically verifiable.
Are wet signatures still used?
Yes. They are still used for some legal, notary, and in-person signing workflows.
Can a wet-signed document be stored as a PDF?
Yes. Many wet-signed documents are scanned into PDF for storage and sharing.