eSign document with QR code signature Leave feedback

QR code (or Quick Response code) is a sort of two-dimensional barcode that consists of black squares arranged in a square grid on a white background. QR codes can be read by smartphone cameras or specialized devices that are dedicated to QR reading - hand-held scanners, handy terminals, desktop scanners, embedded scanners, and so on. Usually QR codes contain data that points to a website or application, emails, or phone numbers, product identifiers, or trackers. Therefore, the scope of QR code applications extends from general marketing and item identification to document management.

GroupDocs.Signature can sign the documents with QR codes of the following types. 

	Aztec code	DataMatrix code	GS1 DataMatrix	GS1 QR code	QR
Application	* transport and ticketing; * in airline industry for electronic boarding passes; * in rail for tickets sold online and printed out by customers or displayed on mobile phone screens. Code is scanned by a handheld scanner by on-train staff or at the turnstile to validate the ticket. * medicine - patient identification wristbands and labels for unit-of-use medications etc.	* printed media such as labels and letters; * industrial engineering purposes - marking components etc; * food industry - to prevent food products being packaged and dated incorrectly;	Used in * Healthcare; * Government; * Industrial. Encodes item additional information, such as: * weight; * expiration date; * batch number; * date of manufacture; * etc.	Used in marketing to encode additional item information on the package	Widely used in automotive industry and mobile applications. Useful for encoding large amount of data characters and specific URLs.
Length	3067 alphanumeric, 3832 numeric, 1914 bytes	2335 alphanumeric, 3116 numeric	2335 alphanumeric, 3116 numeric, 1556 bytes	7089 alphanumeric, 4296 numeric, 2953 bytes	4296 alphanumeric, 7089 numeric, 2953 bytes
Example

When adding QR code electronic signature to a document, the main settings are the text to be encoded and the type of the QR code which should be specified via the QrCodeSignOptions class.

Here are the steps to eSign a document with the QR code signature:

• Create a new instance of the Signature class and pass the source document path as a constructor parameter.

• Instantiate the QrCodeSignOptions object according to your requirements and specify the EncodeType and the Text properties.

• Call the Sign method of the Signature class instance and pass the QrCodeSignOptions to it.

The code snippet below demonstrates how to sign a PDF document with the QR code signature.

using (Signature signature = new Signature("sample.pdf"))
{
    // create QRCode option with predefined QRCode text
    QrCodeSignOptions options = new QrCodeSignOptions("JohnSmith")
    {
        // setup QRCode encoding type
        EncodeType = QrCodeTypes.QR,
        // set signature position
        Left = 100,
        Top = 100
    };
    signature.Sign("SampleSigned.pdf", options);
}

This guide demonstrates how to add QR code signatures to documents using GroupDocs.Signature . It includes steps for generating a QR code signature, configuring its properties like size and encoding, and applying it to a document. QR code signatures can be used for quick verification of the signed document.

To learn more about document eSign features, please refer to the advanced usage section.

You may easily run the code above and see the feature in action in our GitHub examples:

• GroupDocs.Signature for .NET examples, plugins, and showcase
• GroupDocs.Signature for Java examples, plugins, and showcase
• Document Signature for .NET MVC UI Example
• Document Signature for .NET App WebForms UI Example
• Document Signature for Java App Dropwizard UI Example
• Document Signature for Java Spring UI Example

Along with the full-featured .NET library, we provide simple but powerful free online apps.

To generate QR codes and/or sign your files with QR codes for free, you can use the QR Code Generator online app.

To sign PDF, Word, Excel, PowerPoint, and other documents you can use the other online apps from the GroupDocs.Signature App Product Family.