2. connection: information moves between devices using various connection. digital broadcasting, broadband and wireless connections are most common butt there is growing interest in mobile technology such as Near Field Communication (NFC) and Bluetooth to facilitate contactless transaction and information exchange. Some destination provide free WiFi in city centers and tourist sites to facilitate the sharing of travel experiences through social. The network of satellites of the Global Positioning system (GPS) provides connections for navigation and location- based applications. Protocols and standards, which allow various travel distribution system to communicate, are also an important part of connectivity.