Internet connection is not a requirement for using OKIOCAM. You can use it whether you are offline or online.
OKIOCAM doesn't have any wireless network feature itself. It does not support connection through Wi-Fi nor Bluetooth, and only works when it is physically connected to a computer via the USB port. It's completely plug and play.
Just like any other webcam, internet connection is only required when you need to use OKIOCAM with an online service such as video conderencing or Google Chrome Extension.