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A QR code to automatically join a WiFi network By specifying the SSID, encryption type, password/passphrase, and if the SSID is hidden or not, mobile device users can quickly scan and join networks without having to manually enter the data.

A MeCard-like format is supported by Android and iOS 11+.

To create a QR code that allows mobile device users to automatically join a WiFi network, you need to format the WiFi network details in a specific way. This format is supported by both Android and iOS devices (iOS 11+). The format for the QR code content is similar to the MeCard format, which is often used for contact information.

Here is the detailed structure for the WiFi network information in the QR code:

QR Code Format

WIFI:T:;S:;P:;H:;

Parameters

T: Specifies the encryption type. Common values are:

WPA: For WPA/WPA2 encryption.

WEP: For WEP encryption.

nopass: If the network is open and does not require a password.

S: The SSID (Service Set Identifier) of the WiFi network. This is the network name.

P: The password or passphrase for the WiFi network. This field is omitted if T is nopass.

H: Specifies if the SSID is hidden. This is optional and defaults to false if not specified.

true: If the SSID is hidden.

false: If the SSID is not hidden (or you can omit this parameter).

Example

Let's consider an example with the following WiFi network details:

SSID: MyWiFiNetwork

Encryption Type: WPA

Password: mypassword123

SSID Hidden: No

The corresponding WiFi QR code content would be:

WIFI:T:WPA;S:MyWiFiNetwork;P:mypassword123;;

If the SSID is hidden, you would include the H:true parameter:

WIFI:T:WPA;S:MyWiFiNetwork;P:mypassword123;H:true;

Generating the QR Code

To generate a QR code with this content, you can use various online QR code generators or libraries like qrcode in Python. Here's how you can do it using Python:

import qrcode

# Define the WiFi configuration string

wifi_config = 'WIFI:T:WPA;S:MyWiFiNetwork;P:mypassword123;;'

# Create a QR code from the WiFi configuration string

qr = qrcode.QRCode(

version=1,

error_correction=qrcode.constants.ERROR_CORRECT_L,

box_size=10,

border=4,

)

qr.add_data(wifi_config)

qr.make(fit=True)

# Create an image of the QR code

img = qr.make_image(fill='black', back_color='white')

# Save the QR code image

img.save('wifi_qr_code.png')

This code will generate a QR code image that, when scanned, allows a user to join the specified WiFi network automatically.

Scanning the QR Code

To scan the QR code and join the WiFi network:

1.Android: Open the camera app or a QR code scanning app, and point it at the QR code. The device should recognize the QR code and prompt the user to connect to the WiFi network.

2.iOS (iOS 11 and later): Open the camera app and point it at the QR code. The device will detect the QR code and offer to join the WiFi network.

By using this format and method, users can easily connect to a WiFi network without manually entering the network details.

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Once you obtain a GS1/UPC/EAN barcode, or other barcode type and QR code, you can use our free software to batch print barcode labels onto Roll label paper using a professional label printer, or to batch print barcodes onto Avery 5160 label sheets using a regular laser or inkjet printer. Our software has free and paid versions.

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How to Use & FAQ:

Highlights

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Suitable Use Cases

Small businesses and startups needing quick barcode labels for products.

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