Just set up the Mifi works great on main computer. Tried my sons itouch it could not find signal. Also is it necessary everytime you log in to have to connect and disconnect . Is there a shortcut?
Here is a link to come troubleshooting information for your iPod device and accessing WiFi networks:
You would need to connect and disconnect each time you use the device as the devices could use a portion of your usage without you knowing.