Understanding wet signatures vs. digital signatures.
Discover the key differences between wet and digital signatures, and learn when to use each for secure, efficient document signing with Adobe Acrobat.

In today’s fast-paced digital world, the way we sign documents has evolved. You’ve likely encountered two main types of signatures: traditional wet signatures, where you sign with a pen, and digital signatures, which offer added convenience and security. But when should you use one over the other?
Whether you’re managing contracts, legal documents, or everyday paperwork, understanding these options can help you work smarter, protect your information, and meet legal standards. Let’s explore how each signature works, when to use them, and why digital signatures are quickly becoming the preferred choice in today’s business world.
What is a wet signature?
A wet signature is what most people are familiar with—it’s when you physically sign a document with a pen. The term “wet” refers to the ink being fresh immediately after signing. Wet signatures have been the standard method for signing contracts, agreements, and legal documents for centuries, providing a tangible record of the signer’s intent.
When to use wet signatures.
Wet signatures are still required in various formal or legal contexts in Australia, including:
- Wills and deeds. Often needed to ensure the legal validity and authenticity of these important documents.
- Powers of Attorney. Used to grant authority to another person, often necessitating a physical signature.
- Documents requiring certification. Certain documents may need to be signed in front of an authorised witness or certified for added security and validation.
For those who value a personal touch, wet signatures can still feel like the most official and reassuring method to sign a document. However, it’s worth noting that digital signatures are increasingly accepted and legally valid for most documents under Australian law.
What is a digital signature and how does it differ?
A digital signature is an electronic method of signing documents that uses encryption technology to verify the identity of the signer and ensure the document's integrity. Unlike a wet signature, which involves physically signing a document with a pen on paper, a digital signature provides an additional layer of security. It confirms the authenticity of the signer and detects any alterations made to the document after it has been signed.
Digital signatures are legally binding in Australia, as outlined in the Electronic Transactions Act 1999 (Cth). They are commonly used for contracts, agreements, and forms, offering a fast, secure, and convenient way to sign documents remotely. In today’s digital-first environment, digital signatures are increasingly preferred for their efficiency and security.
When to use digital signatures.
Digital signatures are widely accepted and legally binding across various industries and sectors in Australia. They are ideal for:
- Business transactions. Streamlining processes and reducing turnaround times for contracts and agreements.
- Legal agreements. Providing a secure method for executing and managing legal documents remotely.
- Employment contracts. Facilitating quick and secure signing of employment-related documents.
In a fast-paced world where online interactions are the norm, digital signatures offer a reliable solution for signing and sharing documents efficiently and securely.
Wet vs digital signature - The key differences to consider.
While both wet and digital signatures are accepted ways to sign documents, they offer unique advantages depending on your situation and requirements.

Security.
Digital signatures provide a higher level of security through encryption technology. They ensure the authenticity of the signer and verify that the document hasn’t been altered after signing, offering a layer of protection that wet signatures, which can be forged or tampered with, simply don’t provide.
Convenience.
One of the most significant advantages of digital signatures is convenience. You can sign documents from virtually anywhere, without the hassle of printing, scanning, or mailing. Wet signatures, however, require physical presence, which can slow down the process, especially if multiple signers are involved.
Traceability.
Digital signatures create an auditable trail, providing timestamps and other verification details. This makes it easier to track who signed the document and when, a feature that wet signatures don’t offer.
Legal validity.
In Australia, both wet and digital signatures are legally binding under the Electronic Transactions Act 1999 (Cth). Digital signatures are widely accepted for contracts and agreements in sectors like finance, real estate, and business. However, certain legal or regulatory documents, such as wills, deeds, and Powers of Attorney, still require a wet signature to meet specific Australian legal requirements.
It’s always a good idea to consult with a legal professional to confirm which type of signature is appropriate for your particular document or situation.
Environmental impact.
Digital signatures also have the advantage of reducing paper use, making it easier to switch to more eco-friendly, paperless business practices. Wet signatures, by contrast, rely on paper-based processes that are often time-consuming and less sustainable.
Considering these differences, choosing the right type of signature comes down to your security needs, convenience, and legal requirements.
Choosing the right type of signature for the task.
Choosing between wet and digital signatures comes down to the type of document and how it’s being signed. For high-security legal matters that need a witness or involve sensitive personal interactions, a wet signature might be the best option. Wet signatures offer in-person verification, which is crucial for some legal, governmental, or regulatory documents.
For everyday business transactions, contracts, and agreements, digital signatures are usually the smarter choice. They let you sign documents quickly and securely from anywhere—perfect for remote work or handling time-sensitive agreements. Digital signatures also provide an extra layer of protection by using encryption technology to verify the signer’s identity and keep the document unchanged after it’s signed.
Ultimately, your choice should be guided by the document’s requirements, your workflow, and any legal or regulatory considerations. Adobe Acrobat gives you the flexibility to use both wet and digital signatures, so you can adapt depending on your needs. Whether it’s the assurance of a wet signature or the speed and security of a digital one, Adobe Acrobat makes it simple to sign, send, and manage your documents.

Simplifying the signing process with Acrobat.
Whether you need a wet signature or a secure digital signature, Adobe Acrobat has you covered. You can easily create, send, and sign documents digitally, while keeping everything legally compliant and secure. With Acrobat’s easy-to-use tools, you can streamline your workflow and ensure every document gets signed quickly and securely, wherever you are.
Take the next step to simplify your document signing with Adobe Acrobat—no matter how you choose to sign, Acrobat makes it easy.
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Content as a Service v3 - wet-vs-digital-signatures - Wednesday 20 November 2024 at 11:46