Frequently Asked Questions


When sending important documents electronically, you want to ensure they haven’t been tampered with and that the person receiving them is who they say they are. This is where digital signatures come in.

A digital signature is a mathematical scheme for demonstrating the authenticity of digital messages or documents. A valid digital signature, as long as the prerequisites are fulfilled correctly, gives a recipient a strong reason to believe that the message was created by a known sender (authentication) and that the message was not altered in transit (integrity).

A digital signature uses RSA cryptography to convert a document into a string of numbers, called a hash. The hash is then encrypted with the sender’s private key.

When the recipient decrypts the hash with the sender’s public key, they can be sure that the document hasn’t been changed and that it came from the claimed sender.

For this system to work, both parties need to have a valid certificate from a Certificate Authority. Once everything is set up, using a digital signature is a quick and easy way to add an extra layer of security to your electronic communications.

A digital signature is only as good as the key it was created with. If the private key is compromised, anyone can generate a valid signature. That’s why using a trusted Certificate Authority (CA) to generate your keys is essential.

An electronic seal or e-seal is a digital version of a physical seal to authenticate electronic documents. Like a physical seal, an electronic seal verifies the sender’s identity and the document’s integrity.

Legal entities and persons can only use electronic seals to certify the origin and integrity of the document. Moreover, a legal person or entity can manually add electronic seals to the record, or a unique software or system can generate them automatically.

Electronic seals offer several advantages over physical seals. First, electronic seals are more secure since they cannot be copied or forged as physical seals can. Second, electronic seals are more convenient since they can be applied to electronic documents without printing them out.

An electronic seal isn’t the same as an electronic signature because an e-seal only guarantees the authenticity of a document. An electronic signature is still needed to sign it to make it legally binding to all parties involved.

The ESIGN Act is a law in the United States that governs electronic signatures and records. The law was enacted in 2000 and created for transactions in both the public and private sectors.

The ESIGN Act provides legal recognition for electronic signatures and records and establishes rules for their use. The law also sets forth requirements for businesses that use electronic signatures and documents.

Under the ESIGN Act, companies must provide consumers with certain information about their rights under the law and obtain consumers’ consent before using electronic signatures or records.

The ESIGN Act also requires businesses to take steps to ensure the security of electronic signatures and records. In addition, the law imposes liability on companies that fail to comply with its provisions. The ESIGN Act has facilitated the growth of electronic commerce in the United States.

ESIGN Act has been instrumental in making it possible for businesses to conduct transactions online without needing paper documents. Thanks to the ESIGN Act, companies can save time and money using electronic signatures instead of traditional ink signatures.

The use of electronic signatures is now commonplace in the business world. However, some are still unaware of the rules governing their use.

Here are four things you should know about electronic signatures:

1. They must be attached to an electronically transmitted document, and it could be an email, contract, or other documents sent electronically.

2. The signatory must be able to authenticate their identity, which can be done through a username and password, digital certificate, or biometric data.

3. The electronic signature must be accompanied by the date and time it was applied, which helps ensure that the document was not altered after the signature was used.

4. The electronic signature must be legally binding, and this means that it must have the same force as a handwritten signature would have under law.

Following these four simple rules will ensure that your electronic signature is legally binding, and you can use it in place of a handwritten signature on any document.

The requirements for an eSignature to be valid can vary depending on the country or jurisdiction, but some general principles apply.

First, the person signing must consent to the material they are signing. It means they must be aware of what they are agreeing to and intend to do so.

Second, the eSignature must be recorded to ensure its data integrity, which means that it should be stored securely and not be subject to alteration.

Third, there must be a way to verify the identity of the person who signed the document, which may involve using a digital certificate or other similar technology.

Finally, it should be clear when the signature was made, which helps ensure that the document has not been altered since it was signed.

An eSignature that meets these requirements is just as legally binding as a handwritten signature. It can be used in place of traditional paper signatures with the same legal weight and authority.

For businesses, this includes everything from contracts and invoices to employment agreements and NDAs.

There are always exceptions to the rules. For example, wills and testament trusts must be signed in the presence of witnesses, as state law requires.

In addition, some states require specific documents, such as deeds and contracts, to be notarized. As a result, you can’t sign them electronically; even so, they are invalid.

Here is the list of documents according to the National Telecommunications Information Administration (NTIA):

  • Wills and testaments
  • Divorce and adoption papers and other documents on family law
  • Official court documents and court orders
  • Termination notice of life and health insurance policies
  • Notice of cancellation of utility services
  • Notice of foreclosure and eviction for an individual
  • Documents that are legally required to transport hazardous materials and toxic substances

It’s best to consult with a legal professional or lawyer about the governing regulations in each state or country and ensure you comply with them to make your transactions and document signing legal.

In the United States, the answer is a definitive yes. The federal government passed the Electronic Signatures in Global and National Commerce Act (ESIGN) in 2000, recognizing electronic signatures and records as legally binding.

This law applies to documents relating to contracts, leases, and other agreements. In addition, many states have passed their laws regarding electronic signatures. As a result, businesses and individuals can confidently use electronic signatures when entering agreements.

Not only is it legal to do so, but electronic signatures can also save time and money. Moreover, electronic signatures are just as enforceable as traditional signatures, so there is no risk of having a contract disputed or overturned due to a technicality.

However, keep in mind that there are also exceptions, such as documents that can’t be signed electronically like wills and testaments, state statutes documents like divorce and adoption papers, to name a few.

In short, businesses and individuals can confidently use electronic signatures safely, knowing they are legally binding.


Fill offers electronic signature solutions that are legally binding in many countries. Our electronic signatures are just as valid as traditional signatures, and they’re easier and faster to create.

With the Fill app, you can electronically sign documents from your phone, tablet, or computer. It’s a great way to get things done quickly and efficiently, allowing you to create a digital signature that can be used on any document.

Upload the document to the app, add your signature, and send it off. The recipient will then be able to open the document and sign it with just a few clicks.

Our simple electronic signature solutions provide a fast and secure way to get your documents signed. It’s safer than traditional methods because your identity is verified digitally. As a result, you can rest assured that your electronic signature is just as legal and binding as a traditional one.

Yes. Definitely! Fill is an excellent example of how you can use technology to streamline operations in a variety of industries. The Fill app allows users to create and send documents with electronic signatures. It makes it perfect for industries where paperless transactions are the norm, such as real estate, healthcare, insurance, and finance.

Fill also offers a wide range of features that you can customize to fit the needs of any business.

For example, users can create templates for frequently used forms, share them via email for signing, and track document activity. It’s handy for businesses needing approvals from clients or customers who are not physically present.

Fill can fill out forms, such as applications or tax returns. And because it’s a web-based app, you can access it from any device with an internet connection. It makes Fill a versatile tool that can be used in various industries, from healthcare to education to retail.

Yes, it is. Fill is a free app that allows you to sign documents electronically. It’s compatible with both iOS and Android devices, as well as with Windows and Mac OS computers.

Fill is a free app that only takes a few seconds to sign up. Once you have the Fill app installed on your device, you can start signing documents immediately.

It’s also a web-based app, which means you use it on your web browser without downloading the Fill app on your computer.

Fill also integrates with several popular productivity apps, such as Microsoft Word, Google Docs, and Dropbox. As a result, you can use Fill to sign documents regardless of your device or software.

Fill’s electronic signatures are legally binding in many countries, making it a convenient and secure way to sign documents from anywhere in the world. Ensure you have an updated operating system before downloading it on your mobile device or computer.

No. Only the one sending the document needs to create an account. But if the document is just for signing, you don’t need to create one.

Fill is a powerful document creation and management tool that makes working with others on essential projects easy. With Fill, users can create documents, add collaborators, and track changes.

Registering an account requires an active email address and a mobile device to verify your account and sign-ins. If you wish to explore its features, you may sign up anytime.

Fill accounts are free and only take a few moments to create. Once you have an account, you can upload documents from your device or cloud storage services like Dropbox and Google Drive.

Fill also allows you to add other signers to your record. This feature makes it easier for you to track the documents and signatures. It’s a convenient way to manage your documents and get signatures without having to print or fax anything.

Security and Compliance

Yes. Fill is committed to providing a secure electronic signature solution. Fill eSign is built on an encrypted platform that meets the highest security standards. Fill eSign also complies with United States’ HIPAA and GLBA regulations and the EU’s General Data Protection Regulation (GDPR).

Not only is it convenient and easy to use, but it’s also highly secure. Fill takes data security seriously, and our platform uses industry-leading 256-bit encryption, which means your signature and other personal information are safe during data transmission.

Fill’s encryption is based on the Advanced Encryption Standard (AES), the standard used by the US government to protect classified information. Security experts have independently verified our encryption.

In addition, Fill eSign is a compliant solution, meaning it meets all the legal requirements for electronic signatures. So you can rest assured that your documents are binding and enforceable. Whether signing a contract, an agreement, or just a simple form, Fill eSign got you covered.

The data centers with ISO 27001 and FISMA certification managed by Amazon are what Fill uses to secure customers’ data. Amazon Web Services (AWS) has established itself as a leader in cloud computing, offering a secure and reliable platform for businesses of all sizes. One of the key features of AWS is its security capabilities.

Each data center is designed to be highly secure, with multiple layers of security, including physical security, network security, and logical security. AWS also has several policies and procedures to ensure that data is protected from unauthorized access, loss, or destruction. In addition, all data centers are monitored 24/7 by security personnel.

Physical access to the data centers is highly controlled at the perimeter. Professional security personnel, stringent video surveillance, and state-of-the-art detection systems ensure that only authorized staff can pass through the multi-layered security systems. Visitors and contracts are required to present identification throughout the visit or stay, and authorized staff escorts them.

Amazon Web Services employees with a genuine business need may only gain access to data centers and information. Employees’ access is immediately terminated if they no longer require these rights, whether they are still employed by Amazon or Amazon Web Services. Amazon employees regularly record and audit all physical and electronic entries to data centers.

When choosing an eSign service, security should be your top priority. So how can you tell if a particular service is up to the task?

Here are three key security features to look for:

1. Strong encryption. Encryption is the process of transforming readable data into an unreadable format. This ensures that even if someone were to gain access to your information, they wouldn’t be able to make sense of it. When choosing an eSign service, ensure that the provider uses robust encryption algorithms, such as AES-256.
2. Two-factor authentication. Two-factor authentication adds an extra layer of security by requiring users to provide two pieces of identifying information, such as a password and a fingerprint or a password and a one-time code generated by an app on their mobile phone. This makes it much more difficult for someone to gain unauthorized access to your account.
3. A dedicated security team. A good eSign service will have a dedicated team of security experts constantly working to improve the platform’s security. This team should have a proven track record of keeping data safe and be able to provide you with peace of mind that your information is in good hands.

In the United States, electronic signatures are legally binding in nearly all states. Businesses and individuals can enter into contracts and sign documents electronically without worrying about the signature’s validity.

However, a few states, like New York, have alternative laws addressing electronic signatures. As a result, it is vital to know the laws in your state before relying on an electronic signature.

New York has the Electronic Signatures and Records Act (ERSA), which has a legal framework for the state’s digital signatures. The act provides digital signatures with the same legal authority as handwritten signatures. In 2000, it was passed and exempted legal documents like those related to the individual’s property upon their death.

Fortunately, it is relatively easy to determine whether electronic signatures are legal in your state. The National Conference of State Legislatures website and Ballot Pedia, an online encyclopedia for American politics, provide a helpful list of states that have enacted laws specifically recognizing electronic signatures.

In addition, many states have signed onto the Uniform Electronic Transactions Act (UETA), which provides a uniform legal framework for electronic signatures across the country. As long as you know the laws in your state, you should have no problem using electronic signatures.

In recent years, electronic signatures have become increasingly popular and valuable for document signing. However, there is still some confusion about their legal status. Can eSignatures be challenged in court?

The answer depends on the authenticity of the signature. But it is possible thanks to built-in audit trails. An electronic signature is only as good as the audit trail that accompanies it. Suppose there is a clear and convincing record of who signed the document and when it will be difficult to challenge the authenticity of the signature in court.

However, if there is any doubt about the signer’s identity or the time of signing, then a court may be more likely to accept a challenge to the validity of the signature.

Whether or not an eSignature can be challenged in court depends on each case’s specific facts and circumstances. However, as long as a clear, convincing record shows who signed the document and audit trails can verify them, there is a good chance that an eSignature will be upheld in court.


Fill is a free app that lets you sign unlimited documents online. It means you can sign documents electronically without having to print them out or sign them by hand.

The Fill app is ABSOLUTELY FREE FOR LIFE. However, if you want to access premium features, you can avail any of the paid plans like the following:

Plus (for Small Business Use) – the features include unlimited signing and uploading of documents, audit trails and logs, and seamless syncing across devices. You can export and download signed documents and also create customizable templates for different types of documents. The Plus plan only costs $16.66 per month or $199.99 billed annually.

Pro (for Corporate Use)
 – on top of the Plus features mentioned above, it includes template funnels and conversion analytics, 256-bit end-to-end encryption, third-party apps integration, developer API, team accounts and workflows, and more. The Pro plan only costs $24.99 per month or $299.99 billed annually.

Fill is a powerful app that lets you quickly sign and fill documents electronically. Fill’s freemium plan offers all the features you need to get started, including unlimited document storage, free electronic signatures, and more.

Fill’s freemium plan is the perfect way to get started with electronic signatures and document management. You can sign unlimited documents, enjoy unlimited uploads of documents, and access to real-time audit trails and logs.

All you need to do is register on the website with an active email address and mobile number. You can access all your signed documents across devices as Fill supports all platforms such as Android, iOS, Windows, and Mac OS. You can explore the freemium account and upgrade as you wish.

Fill app is a versatile electronic signature solution that allows users to create an unlimited number of accounts with Pro plan. This makes the Fill app an ideal solution for businesses of all sizes that need to sign documents regularly. For the Basic and Plus plan, you can only create one account.

Fill app’s feature-rich platform offers a wide range of features and integrations that make it easy to use and customize. It also offers a freemium subscription so that users can try out the platform before committing to a paid subscription or just use it for free for life.

When you subscribe to the Fill app, you can choose to have your subscription automatically renewed each month or year. This way, you can keep using Fill without worrying about your subscription lapsing. Automatic renewal is a great way to ensure you always have access to Fill’s features.

It’s one less thing to remember each month. If you ever decide you no longer want to use Fill, you can cancel your subscription anytime.

When you sign up for a Fill subscription, you agree to our Terms of Use and give us your consent. Part of our terms states that your Fill subscription will automatically renew at the end of each monthly or annual term.

If you cancel before your next renewal date, you’ll still have access to Fill until the end of your current term. After that, your subscription will expire, and you will no longer have access to the Fill app’s features.

At Fill, we understand that our customers’ needs can change over time, so we offer the flexibility to cancel or downgrade your subscription anytime.

Log in to the Fill app and navigate to the ‘Pricing’ tab to cancel your subscription. You can select ‘Edit,’ click ‘Cancel,’ and confirm your decision.

Contact our support team for further assistance if you prefer to downgrade your subscription.