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 for Python via .NET 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 encode_type and 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 Python:

import groupdocs.signature as signature
from groupdocs.signature.options import QrCodeSignOptions
from groupdocs.signature.domain import QrCodeTypes
import groupdocs.signature.domain as gsd
import sys 
import os

def run():
    with signature.Signature("./sample.pdf") as sign:
        # Create QR code signature options
        options = QrCodeSignOptions()
        
        # Set QR code text
        options.text = "John Smith"
        
        # Set QR code type
        options.encode_type = QrCodeTypes.QR
        
        # Set QR code position
        options.left = 100
        options.top = 100
        
        # Set QR code size
        options.width = 100
        options.height = 100
        
        # Set QR code colors
        options.foreground_color = gsd.Color.BLUE
        options.background_color = gsd.Color.WHITE
        
        # Sign document
        sign.sign("./SampleSigned.pdf", options)

Here’s an example showing how to create a more complex QR code signature with additional customization:

import groupdocs.signature as signature
from groupdocs.signature.options import QrCodeSignOptions
from groupdocs.signature.domain import QrCodeTypes
import groupdocs.signature.domain as gsd
import sys 
import os

def run():
    with signature.Signature("./sample.pdf") as sign:
        # Create QR code options
        options = QrCodeSignOptions("https://www.example.com/verify-document")
        
        # Setup QR code encoding type
        options.encode_type = QrCodeTypes.QR
        
        # Set signature position and size
        options.left = 100
        options.top = 100
        options.width = 200
        options.height = 200
        
        # Set QR code appearance
        options.foreground_color = gsd.Color.BLUE
        options.background_color = gsd.Color.WHITE
        
        # Set QR code error correction level (L, M, Q, H)
        options.error_correction_level = gsd.QrCodeErrorCorrectionLevel.H
        
        # Sign document
        sign.sign("./SampleSigned.pdf", options)

This guide demonstrates how to add QR code signatures to documents using GroupDocs.Signature for Python via .NET. 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.

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

• GroupDocs.Signature for Python via .NET examples

Along with the full-featured Python 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.