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Wi-Fi QR Code

A QR code that encodes Wi-Fi network credentials (SSID and password). Scanning it connects your device without manual password entry.

Nov 1, 2025 · About 1 min read

QR Code

A Wi-Fi QR code encodes a wireless network's connection details (SSID, password, and encryption type) into a QR code. Scanning it with a smartphone camera connects the device to the network instantly, eliminating the need to type in a password.

The format follows an international standard: the string "WIFI:T:WPA;S:NetworkName;P:Password;;" is converted into a QR code. T specifies the encryption type (WPA/WEP/nopass), S is the SSID, and P is the password.

Use cases are wide-ranging. Cafes and hotels can display a QR code at the counter or on tables instead of dictating complex passwords. Airbnb hosts increasingly provide Wi-Fi QR codes for guests. In corporate offices, placing a guest Wi-Fi QR code at reception reduces IT support requests.

Combining Wi-Fi QR codes with short URLs is also effective. If you want users to land on a specific page (menu, guide, survey) after connecting, you can place a short-URL QR code alongside the Wi-Fi QR code.

A key security consideration: Wi-Fi QR codes contain the password in plain text. When displayed in public spaces, use an isolated guest network and rotate the password regularly. iOS 11+ and Android 10+ can read Wi-Fi QR codes directly from the camera app. Related books are available on Amazon.

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Related Terms

QR Code

A two-dimensional barcode that stores data in a matrix of black and white squares, readable by smartphone cameras.

Dynamic QR Code

A QR code that encodes a short URL, allowing the destination to be changed without reprinting the code.

QR Code Design

The practice of customizing QR code appearance with colors, shapes, and branding while maintaining scannability.

QR Code Security

Measures to protect users from malicious QR codes that may lead to phishing sites or malware downloads.

QR Code Print

The production workflow and quality control for reproducing QR codes on paper, film, metal, and textiles. Resolution, contrast, quiet zones, and substrate properties determine real-world scan reliability.

QR Code Inventory Management

A system that manages receiving, shipping, and stocktaking by scanning QR codes affixed to products and materials. Stores more information than traditional barcodes.

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FAQ

How do I create a Wi-Fi QR code?
Free QR code generators and apps let you create one by entering the network name (SSID), password, and encryption type (usually WPA). On iPhone, you can also generate a sharing QR code from the Settings app.
I scanned a Wi-Fi QR code but cannot connect. What should I do?
The encryption type may be set incorrectly. Modern routers use WPA2 or WPA3; selecting WPA during generation usually provides backward compatibility. Also check whether the SSID or password contains spaces or special characters that may not have been encoded properly.
Is the password in a Wi-Fi QR code secure?
The password is embedded in plain text, so anyone who photographs the QR code can extract it. In public venues, always use a dedicated guest network isolated from your internal network, and change the password periodically.

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