How can I use Eye-Fi with my Canon 5D Mark III to easily transfer photos wirelessly?

To use Eye-Fi with your Canon 5D Mark III for wireless photo transfer, first insert the Eye-Fi card into the camera's SD card slot. Then, download the Eye-Fi app on your smartphone or computer and connect it to the Eye-Fi card's Wi-Fi network. You can now transfer photos wirelessly from your camera to your device with ease.