The security guide to Wi-Fi QR codes
Modern smartphones running iOS and Android automatically recognize standard Wi-Fi configuration barcodes. When your camera points at a valid Wi-Fi QR code, the operating system decodes the SSID and encryption protocol in device memory and prompts the user to join the network with one tap.
Are my network credentials safe?
Because MyLogoQR operates 100% client-side in your local web browser, your Wi-Fi name and password are never sent across the internet or stored on an external database. The string WIFI:T:WPA;S:NetworkName;P:Password;; is compiled directly into the vector image on your device.