If you've made a change to your address book on your PDA, your cell phone and PC address books will get updated automatically once your PDA comes within range. What's most interesting about Bluetooth is that nobody can say for sure what future applications might catch on and become commonly used by the general public. Synchronizing cell phones and PDA information is just the tip of the iceberg. Imagine a world in which all consumer electronics can talk with each other. Digital cameras can send commands to a printer.
Cell phones can act as modems for our laptops.
Email will be downloaded to each of our devices without our aid. If you incorporate voice recognition technology, you can wear a wireless headset to operate your cell phone while it sits in your closed briefcase. The applications are boundless, and the telecommunications industry is betting on it. Because each of these developing companies are using the same standard, every Bluetooth equipped device will be able to talk to one another regardless of manufacturer. Devices are embedded with a short-range transceiver, either directly or through an adapter device such as a PC Card, which allows them to send and receive information independently.