Friends come to your house and ask you to tell them your WiFi password. You may not want to, or if it is a complex code, you should enter it for them.
This can become very annoying if many people come to your house. Below we will see how you can speed it up procedure using a QR code that your friends can scan to join your network.
Visit qifi.org from your computer browser
Enter your WiFi connection SSID, encryption type and password
Generate the QR code and print it to paste it somewhere visible.
You can use other tools, such as the ZXing QR code generator or the QR4 generator for the same result. Now you do not have to enter the password for all your friends every time.