This document provides an overview of Gi-Fi technology. It begins with an introduction describing Gi-Fi as a wireless transceiver integrated on a single chip that operates at 60GHz and allows data transfer speeds up to 5GB per second. It then reviews relevant literature on Gi-Fi and discusses the history, architecture, working principles, features, applications and future scope of Gi-Fi. Key points are that Gi-Fi was developed in Australia to overcome the low speeds and short ranges of Bluetooth and Wi-Fi, it supports the IEEE 802.15.3c standard, and within 5 years is expected to be the dominant wireless networking technology providing low-cost, high-speed connectivity.