How to Make a WiFi QR Code: Secure WPA3, WPA2, and Hidden SSID Guide

1. The Standardized WiFi URI Schema

Mobile operating systems (iOS 11+ and Android 10+) feature native protocol handlers that parse the standardized `WIFI:` URI syntax:

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

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Field Specification:

* `S:` (SSID / Network Name): Case-sensitive name of the wireless access point. * `T:` (Authentication Type): `WPA` (covers WPA, WPA2-PSK, and WPA3-SAE), `WEP` (legacy encryption), or `nopass` (unencrypted public hotspot). * `P:` (Pre-Shared Key / Password): The raw network security key. * `H:` (Hidden Network Flag): `true` if the router does not broadcast its beacon SSID; `false` or omitted for standard networks.

2. Escaping Special Characters

A frequent source of failed WiFi scans is unescaped delimiters. If your SSID or password contains colons (`:`), semicolons (`;`), backslashes (`\`), commas (`,`), or double quotes (`"`), each occurrence must be preceded by a backslash escape character (`\`):

WIFI:S:Guest\;Lounge;T:WPA;P:Secret\:Key\;123;;

3. RTL Language Typography for Multi-lingual Table Tents

In international hospitality settings (e.g., Middle East, Pakistan, North Africa), WiFi signage must clearly communicate instructions in both Latin and Right-to-Left (RTL) scripts such as Urdu (`اردو`) and Arabic (`العربية`). Always ensure the QR symbol maintains an unblemished quiet zone separate from RTL typography blocks.