WiFi QR — SSID, WPA and hidden flag, encoded here

What this page encodes

This is not a generic URL generator with the word WiFi in the title. The payload is the MECARD-like WIFI: string that iOS and Android cameras understand. Type, SSID, password and the hidden flag map onto T, S, P and H. Empty password is valid only for nopass networks; WPA with a blank P will not join.

Special characters in the SSID or password are escaped: semicolon, comma, colon and backslash. If you skip that step in a homemade string, a network named “Shop;2F” becomes two fields. Mark does the escaping in this tab.

Guest versus staff

Put guest credentials on a tent. Do not put the office SSID on the street window. A photograph of the code is the password. There is a longer write-up for cafés and studios on guest WiFi.

After download, scan with a phone that is not already joined to the network. If the sheet says “open” but you picked WPA, the phone will wait for a key that does not exist.