supports frevvo supports Digital Signatures. Authenticated users can digitally sign a section, lock it down and prevent tampering with the data. Authenticated users can sign Sections in forms/workflows using a text rendering of the user's name (user credentials), a previously uploaded signature image, or a signature drawn with mouse/touchscreen. The user must be be authenticated to the Serverfrevvo Server.   also frevvo also offers a Signature control that allows any user, including email/anonymous users, to sign electronically using either a track pad/mouse, stylus or a touch screen in use mode. View this video for more information about the frevvo  Electronic frevvo frevvo Electronic Signatures feature.

Both authenticated and non-authenticated users may sign a form using a Signature control from the palette. If authentication is required, Signed Sections SignedSections should be used.

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Signatures can be added to any form using one of the methods listed:

• Signature Control
• Signed SectionsSignedSections

The signature control only captures a handwritten signature image. It does not create a digital signature.  A signed section that is set to wet signature both captures a handwritten signature image and creates a digital signature over the contents of the section. See below.

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The user must be authenticated to the serverfrevvo server. Here is how it works:

 uses frevvo uses public key cryptography. When a  server a frevvo server is first started, it generates a public and a private key. This is automatically generated using the RSA algorithm. There is no official certificate authority (CA); however, if you want one you can supply your own public and private keys that are certified by some authority (like Verisign). An official CA is not required, since the data is signed by and verified by using frevvo using keys generated by frevvo. You must keep the private key "private" by setting up good security practices to the serverfrevvo server's disk. The public key may be shared with anyone and, in fact, if you manage the server as the admin user, and click on Security you can see the public key displayed there.

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You can use the signature control to place a signature anywhere in your form. Wet signatures allow the user to enter their signature using either a track pad/mouse, stylus or a touch screen during form completion. Authentication to the server frevvo server is not required. Wet signatures are supported on Signed Form Sections where the designer can choose text/image or wet signature formats.  Wet signatures will be optionally rendered on the pdf/print copy of the form. Your browser must support HTML5 canvas technology for proper signature entry functionality.  Here is a list of browsers that can be used:

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When designing a form with an electronic wet signature control, the captured signature is attached to the form submission as a PNG image attachment. Any frevvo document actions affecting the form data includes the signature png image. For example, should you choose to post the data to your web application, then the signature png is part of that posted data. Should you choose to email the data, the signature png will be attached to the email. Finally, should you choose none of these things, then the captured signature png is available for downloading by browsing your submissions within frevvo. See Submissions Stored Inside of frevvo for the details.

All of the standard properties and settings apply to the signature control. For example, the required setting can be used to force the entry of a wet signature in order for the form to be valid (in use mode). You can change the width of the signature light box by changing the value of the Width property grid to another value. 

Signed Sections

provides frevvo provides true digital signature functionality via a section control in your form. The granularity is at the section control, so that different parts of the form can be signed by different people rather than a signature being applied only to the entire form. You must be an authenticated user to sign a section whether you choose Wet Signature or Text/Signature Image on the section security tab in the designer.

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Signed Section Signature Options

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• None Required - no signature required, section not digitally signed.
• Text/Signature Image - This is the same as selecting the signature check box in previous versions. An uploaded signature image for the user will be used, if one is available. The user's name will be printed otherwise. The date of the signature, based on the user's browser settings, will also display.
• Wet Signature -  will  frevvo will present the signature entry dialog to capture the user's signature. The date of the signature, based on the user's browser settings, will also display.

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The default value is None Required. The Must sign property makes the signature required. With Must sign, a form cannot be submitted or a workflow is not sent to the next person until the signature is added. Lock sign means that the next person in the workflow can not remove the signature and edit the signed data. A good use case is an employee performance review where the manager starts the form, and signs the review, and sends it to the employee. You would check Lock sign so the employee cannot unsign and edit the data entered by the manager.

Checking Must Sign will disable the None Required option from the Signature dropdown and automatically selects Text/Signature Image. You can change the Signature dropdown to Wet Signature.  

Sections that are hidden/not hidden via a rule or the Visible property in the designer, behave as stated below with respect to Must Sign:

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Installing the Topaz Electronic Signature Pad

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It is up to the designer frevvo designer to specify the forms and steps in a workflow, that will be using the Topaz signature tablet. Simply click the cog icon in the forms designer to display the form property panel. You will notice the Allow Sign Pad property is not checked (default). Check this property to change the runtime behavior of the signature dialog and allow users to sign with the external signature pad.

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