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Digital Signatures are a type of Electronic Signature that uses a certificate-based Digital ID, obtained either from a cloud-based trust service provider or from the signer's local system. A digital signature, like a conventional handwritten signature, identifies the person signing a document.
Unlike a handwritten signature, a certificate-based signature is difficult to forge because it contains encrypted information that is unique to the signer. It can be easily verified and informs recipients whether the document was modified after the signer initially signed the document. Adobe Acrobat Sign supports digital signatures by simply placing the Digital Signature field on a form either via Text Tags, drag and drop in the Acrobat Sign Authoring environment or authoring in Adobe Acrobat with Acroforms.
Time stamps are a critical component of both the US and EU signature compliance standards when applying digital signatures. Identity can be established in a number of ways certificate, logon, id card … but the time stamp has to be provided by a trusted and authorized time stamping authority TSA. The time stamp guarantees the Long-Term Validity LTV of the signed agreement by locking the signature as well as the document. Essentially providing a lock for the lock.
This is critical for digital signature compliance because personal signing certificates can expire, while the time stamp LTV can be renewed over time without changing the validity of the signature. The Time Stamp evidence is displayed in the digital signature appearance using the ISO notation.
Know what instance you are on. From the Senders perspective, all that is required is for a Digital Signature field to be placed on the document that is being sent. Each recipient can have, at most, one digital signature field assigned to them within an agreement. Any additional signature fields that are needed can be of the standard e-signature field type. Note that just because one signer is using a digital signature does not mean that any other signers are required to.
It's perfectly allowable to have only your internal signers apply digital signatures while external signers use the e-signature field type or vice versa. Template creators will find the Digital Signature field in the Signature Fields section of the Authoring environment.
Below you can see the e-signature field on the left, and the digital signature field on the right. If you add more than one Digital Signature for a signer e. Like all other field types, you can replicate the functionality of a Text Tag when building your documents in Acrobat by renaming the field to contain the full text tag with all arguments but not the brace pairs on either end. Because digital signatures are certificate-based, signers need to obtain a Digital ID before they can apply their signature.
Signers are notified via email, and instructed to open the agreement by clicking the Review and sign button. Once the document is open, the signer can read the document and fill in any fields that are needed.
All required fields need to be completed before the signer can advance the signature process. Once successfully authenticated, the signer is presented with a list of valid Digital IDs to choose from.
When the second-factor authentication is successfully entered, the document is signed, and a success message is displayed. After selecting Download and Sign With Acrobat, an overlay is prompted describing the process.
The blue Continue to Sign button pops up from the bottom of the window when all required fields have been filled. If you do not have Acrobat or Adobe Reader, you need to download and install it. After clicking the button to create a new Digital ID, you are presented with the configuration panel. Here you find three options:. Once you have entered your password, click Save to complete the creation of your Digital ID. After clicking Continue , the panel refreshes to show the visual representation of your signature object.
To customize it, click the Edit button at the top right of the panel, which loads the Customize panel. At the top of the Customize panel, notice that the same signature options exist as in the App.
You can opt to replace the default font with either a drawn signature, or an image. The Digital ID panel disappears, and the PDF updates to show a new blue banner at the top, indicating that the signature is valid. Additionally, a small pop-up window appears, confirming the successful digital signature.
Below is an example of a normal e-signature field on the left, and a digital signature on the right. The History tab, and the related Audit Report , are slightly different than a standard e-signature report in that they have an additional event: Document digitally signed.
In the example below, you can see that the first signer has one "e-signed" event, and that is all. The second signer has both an e-signed event as well as a digitally signed event. The reason for this is the digital signature process takes place in two parts. The part you do in the web browser filling in the fields , and the part that you do on your local desktop applying the digital signature certificate.
When the signer completes the field portion and clicks the Submit and Proceed to Sign button, the input content is uploaded, and pressed into the PDF. This is what the e-signed event indicates.
Keeping in alignment with the History information, you can see that the audit report also reflects the two stages of the signature process. Select the digital signature providers you will accept. Only options selected will be available to signers. Aadhaar signatures are available to enterprise accounts at an additional per signature cost, which must be configured prior to use.
Customers that need to obtain Aadhaar signatures can contact their Success Manager or their Sales contact to discuss volume and start the configuration process. If you would like to create a different signature experience for external signers vs internal, you can enable a second set of the above options that apply only to external signers.
For example, you may want to be more permissive in the signature vendors for external signers, or provide different instructions for how to obtain a signature for internal signers. Some compliance requirements demand that a reason for an applied digital signature be noted by the signer. If digital signatures are being used to fulfill a compliance demand, consult with your legal team to determine if you should also require a signature reason within the signature process. To access the controls, click the Bio-Pharma Settings link.
There are some providers that restrict the access to their service only to pre-authorized customers. This means that the service will not be accessible until the provider has authorized the account to use it.
BankID Sweden is a commercial service of such kind. Corporate-specific providers are also restricted to authorized accounts. Once authorized by the provider, your users will be able to use the restricted service. Until then your users will typically see an error message from the provider when trying to use a restricted service.
The Account ID is truly a property at the account level. All groups from an account share the same Account ID, so once the restricted provider is authorized for an account, it becomes authorized for all groups of that account. Any account level admin can request to have this setting changed from one format to the other by sending a request to the Acrobat Sign Support team.
The digital signature workflow forces the agreement into a unique process. Because of the special handling required to get the signature affixed, there are several limitations to be aware of. Legal Notices Online Privacy Policy. Use digital signatures Search. Feature description. Time Stamps. How it's used. For Senders. Using Drag and Drop Authoring.
Text Tag Syntax. As previously stated, there can only be one digital signature field per signer in each document. Building forms in Acrobat. The Signer's experience. The Acrobat Sign solution walks the signer through the process: Open the agreement, and fill in any required fields Choose from existing Digital IDs, or create a new one Apply the signature Once the signature is applied, the signature cycle continues as normal. Open the agreement and fill in the fields Mousing over the digital signature field prompts a text balloon with additional instructions.
Clicking the field opens an overlay asking the signer to select one of two paths: Cloud Signature the instructions below follow this path Download and Sign With Acrobat Click here to jump to the download instructions Select the appropriate option and click Next. A new overlay is presented, asking the signer to select an identity provider from a drop-down. Only providers listed in the drop-down can be used Signers that do not have a permissible Digital ID can click the Click to get a new Digital ID link, and be routed to obtain a new Digital ID from one of several cloud signature providers.
Once they have established a new Digital ID, they can return to the signature process. The identity provider challenges the signer to authenticate to their service. A preview of the signature is presented. The signer is returned to the agreement and prompted to Click to Sign. The identity provider then may require an additional, second-factor authentication.
Enter any required values, and click OK. Click Continue to Sign. Clicking the Continue to Sign button launches the download page. At the top of the Reader window is a blue banner indicating that a digital signature is needed. A yellow tab indicates where to click and place the signature. Create a new Digital ID. Clicking the signature area opens a dialogue box showing any certificates available. Here you find three options: Use a Signature Creation Device - Used when you have a physical device that you connect to your local system.
The panel refreshes to show the details of the Digital ID.
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