For WiFi guest networks with a fixed SSID: QR code – Wikipedia
Posted by jpluimers on 2021/10/06
Access Denied
I knew it was possible to generate QR codes to access quest networks (as the QR code has credentials) for WiFi networks having a fixed SSID.
I just never bothered, but did when needed home care with quite a few different people providing the care.
Generating was easier than I anticipated, though I hoped I just could put the parameters in a URL and fire off to get a page including the QR code.
Alas, the pages I found require you to enter the SSID name and key/password phrase.
That’s OK: I have saved the PNG files for our network and my brother’s as images so I can put them on-line, and printed them out so guests can scan and use the network at once.
Here we go:
- 124 network Access Denied, key 2171TB24
- 171 network Disconnected, key 1060NP71
Related:
Disconnected
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- [WayBack] QR code – Wikipedia
- [WayBack] wireless networking – Link / URL to connect to WiFi – Super User (thanks [WayBack] miken32):
You can generate these codes using an online service, or using the QR generator of your choice and feeding it this text:
WIFI:S:My_SSID;T:WPA;P:key goes here;H:false; ^ ^ ^ ^ ^ | | | | +-- hidden SSID (true/false) | | | +-- WPA key | | +-- encryption type | +-- ESSID +-- code typeEscape any special characters (
",',;,,, or\) with a backslash. - Too bad this RFC never reached the IETF [WayBack] The Wi-Fi URL scheme:
2. Syntax of a Wi-Fi URL Following the syntax conventions of RFC 1738 [RFC1738] and RFC 1808 [RFC1808] to allow clients to use existing parsing libraries, Wi-Fi URLs MUST include a <host> component and MAY contain a <user> and/or <password> component and MUST NOT include the <port>, <path>, <params> or <query> components. wifiURL = "wifi:" // [username] : [password] @ ssid # [clip] user = user name for WPA/WPA2 Enterprise 802.1X authentication passsword = password for WPA/WPA2 Personal or Enterprise authentication ssid = 802.11 SSID for the the Wi-Fi network to connect to clip = URL for network information
- QIFI:
- [WayBack] Barcode Contents · zxing/zxing Wiki · GitHub: WiFi
Wi-Fi Network config (Android, iOS 11+)
We propose a syntax like “MECARD” for specifying wi-fi configuration. Scanning such a code would, after prompting the user, configure the device’s Wi-Fi accordingly. Example:
WIFI:T:WPA;S:mynetwork;P:mypass;;Parameter Example Description T WPA Authentication type; can be WEP or WPA, or ‘nopass’ for no password. Or, omit for no password. S mynetwork Network SSID. Required. Enclose in double quotes if it is an ASCII name, but could be interpreted as hex (i.e. “ABCD”) P mypass Password, ignored if T is “nopass” (in which case it may be omitted). Enclose in double quotes if it is an ASCII name, but could be interpreted as hex (i.e. “ABCD”) H true Optional. True if the network SSID is hidden. Order of fields does not matter. Special characters
\,;,,and:should be escaped with a backslash (\) as in MECARD encoding. For example, if an SSID was literally"foo;bar\baz"(with double quotes part of the SSID name itself) then it would be encoded like:WIFI:S:\"foo\;bar\\baz\";;
–jeroen
The Wiert Corner - irregular stream of stuff 
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