Wi-Fi Technology WiFi (Wireless Fidelity) is the latest data transmission technology using radiofrequency energy, which allows the user to enjoy wireless broadband Internet access. WiFi allows both companies and individuals alike to enter the world of high-speed, wireless Internet access, thus optimizing connection costs and generating sales through flexibility. Using laptops, desktops or PDAs, users can read their e-mail, access their corporate network, or simply browse the Internet without wires -provided that their devices feature WiFi technology - by means of special processors, PCMCIA WiFi cards or WiFi adaptors.