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Re:Show HN: Print a WiFi Login Card by chrismorgan on Sunday May 31, 2020 @01:48PM (#23371188)
Per https://github.com/bndw/wifi-card/blob/5d7fbbda1e8eac5802c8d..., the QR code text is of this form:

  WIFI:T:WPA;S:{ssid};P:{password};;
https://github.com/zxing/zxing/wiki/Barcode-Contents#wi-fi-n... seems to be where this format came from. (That page describes various other forms of QR codes too.)

bndw: looks like some characters need escaping: backslash, semicolon, comma and colon. Maybe more too, given the treatment of double quotes in that last link (I’ve filed https://github.com/zxing/zxing/issues/1292 about that inconsistency).

Re:Show HN: Print a WiFi Login Card by brujoand on Monday June 01, 2020 @03:23AM (#23376075)
Ah I just read through the code to figure this out, because I wanted to know what other formats exist. Should’ve checked the comments first. Thanks :)