QR Connect is a free Android application developed by I-O DATA DEVICE INC. The app makes it easy to connect to Wi-Fi by scanning a QR code. To use the app, it is necessary to have a wireless LAN router with a QR code for QR Connect. The app is compatible with Android OS version 2.2 and above, and it is recommended to use a device with an autofocus camera to read QR codes.

QR Connect offers a simple and reliable way to connect to wireless LAN routers without any confusion or mistakes. However, it is important to note that the app requires an appropriate level of lighting to scan the QR code accurately. Also, for devices without autofocus or low-resolution cameras, the app may not work correctly. If an error occurs, it is recommended to close other apps and restart the device before trying again.