How a WiFi QR code works

A WiFi QR code stores a network name and connection details in a structured text format. A compatible phone can offer to join after scanning. It reduces manual typing in cafes, offices and guest spaces. Behaviour depends on the phone and camera app. The code does not improve internet speed or replace the router: it only shares connection information.

Enter the exact network details

Copy the SSID exactly, including case, spaces and special characters. Choose the network intended for guests rather than your internal work network. The security type selected in the generator must match the router setting. Check passwords for typing errors and accidental spaces. Networks requiring enterprise credentials or extra authentication may not be fully configured by a simple WiFi QR code.

A QR code does not hide the password

The code is another way to share the password, not an encryption mechanism. Someone who reads or photographs it can obtain the connection details. Use a separate guest network and configure isolation from internal devices where your router supports it. Guest network access controls are router settings, not features supplied by the QR generator.

Test and update the printed code

Add a short scan instruction and place the code where guests can reach it easily. Test with different iPhone and Android devices. Some phones ask users to confirm joining, and a captive login page may still require another step. If the SSID or password stored in the code changes, generate and test a replacement and remove the old prints. Keep a list of locations if the code appears on several tables or in multiple rooms.