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Are Bluetooth hardware add-ons worth it? Take a bite from each one, and see for yourself.

By Amanda C. Kooser

Opinions expressed by Entrepreneur contributors are their own.

Ah, Bluetooth, we knew you when you were being called the latestand greatest innovation in wireless technology. You were going tobring devices and their data together within short ranges. You weregoing to be everywhere, from supermarkets to office buildings.Well, Bluetooth, you haven't really exploded like the hypesuggested. But you have been quietly growing up and making low-keyappearances in a slew of devices, ranging from mobile phones toPDAs to printers.

We've rounded up a sampler plate of Bluetooth hardwareadd-ons. It's a hodgepodge of devices, but that's just atestament to the variety of uses the technology is finding.Bluetooth works in the 2.4GHz spectrum at ranges under 10 metersand can transfer data at rates of up to 721Kbps. It acts as acomplementary technology to a Wi-Fi wireless network solution andcan help keep your portable equipment connected on the go.

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