, exchanging PIN/passkey. Use installed Bluetooth software on the host desktop/laptop to configure network access in order to allow other devices to connect to the Internet/LAN through the host. Use the connection wizard or similar software on the PDA to establish a connection to the Internet through the host computer (rather than via a separate dial-up device such as a mobile phone). When the PDA attempts to connect to the host computer, authorise the connection from the host. If required, enter dial-up and/or log-on information to complete the connection. Dial-up Networking over a Bluetooth Enabled Mobile Phone The steps in setting up this service, which uses the dial-up networking profile, are shown in Table 10-8. Table 10-8: Usage Model - Dial-up Networking via a Bluetooth Enabled Mobile Phone Description Pair the two devices (the mobile phone and the computer requiring dial-up access), exchanging PIN/passkey. Use installed Bluetooth software on the computer to confirm via dial-up networking properties that a Bluetooth modem is installed for the mobile phone. If not this can be downloaded from the phone maker's Web site. On the computer, connect to dial-up networking (e.g. in Windows, double click on the dial-up networking icon in the Bluetooth devices folder). Enter username, password and ISP dial-up number when requested. Dial-up, user authentication and registration will follow. Wireless PAN Standards Application software such as dial-up networking or Internet connection may offer the option to save username and password information on the mobile device. This can be a security risk if the mobile device is lost and is not protected by a password. Bluetooth security, including a checklist of operational security measures, is discussed in the next chapter. Current and Future Developments Bluetooth's FHSS physical layer specification provides limited scope to compete with the higher data rates that will be available using wireless USB and other UWB radio based PAN standards. An increase in data rate to 3 Mbps 