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By Brad Smith, Wireless Week Technology Editor
There's a growing proliferation of short-range wireless technologies. You've got ZigBee and Z-Wave for sensor and control networks, Near Field Communications (NFC) for proximity payments, RFID for tracking assets, Ultra Wideband (UWB) for high-speed connections between devices. You might throw Wi-Fi into that mix for networking. And, oh, don't forget about Bluetooth.
Bluetooth has become fairly ubiquitous in today's society. You can't turn around without seeing someone sporting a Bluetooth earpiece and its little blue flashing lights. It's not just geeks and business users. I've seen soccer moms with them. And there are more and more stereo headsets using Bluetooth.
Headsets were the first place Bluetooth found a home, but you're seeing it used in a lot more devices and applications now. There are watches with Bluetooth, even car radios with Bluetooth. The new ways Bluetooth is being used was driven home to me last week when I attended Motorola's annual technology forum for analysts and the press.
Several short-range technologies were part of some demonstrations - NFC to use your phone to pay at the check-out register and ZigBee to create an ad-hoc mesh network for firemen and again to monitor equipment in a hospital. But Bluetooth seemed to be used in more demonstrations as a way to connect not only mobile phones but other equipment like TV monitors, computers and storage devices.
Analysts are forecasting a slowing in the spread of Bluetooth. In-Stat says the number of Bluetooth devices will increase 34% this year, a healthy number but still down substantially from recent years. I think that shows a maturation of the technology. You can't keep doubling every year.
I'm skeptical there will be much slowing in Bluetooth's growth, though. There are some new technologies joining Bluetooth that could push it into more devices and new areas. One is the integration of the Wibree low-power technology, which is under way now with the merger of the two groups. Another advance is Bluetooth 2.1 +EDR (enhanced data rate), which could be in devices by Christmas. Still another is the integration of the UWB broadband technology from the WiMedia Alliance. You haven't heard a lot about the latter, so I have to wonder if that integration is proving to be more difficult than originally thought.
My only concern about the future of Bluetooth is that the technology and the organizations backing it - specifically the Bluetooth Special Interest Group - are becoming unwieldy and cumbersome. Bluetooth is becoming an umbrella of technologies that don't necessarily work together.
A recent report from the analyst group IMS Research says all this expansion of Bluetooth technology may hurt it in certain areas, especially among car manufacturers. Bluetooth was in 4 million vehicles last year, IMS Research says, and it still expects it to grow in the auto segment more than 300% in the next five years. Most of the interest from car makers is for hands-free uses and for audio streaming, IMS says.
But, says the report, some in the automotive industry don't think they can keep up with all the new capabilities on the horizon for Bluetooth, since the design cycle for cars is 4 to 5 years. Incidentally, IMS Research is forecasting 800 million Bluetooth devices will be sold this year, up 40% from 2006.
It will be interesting to see how Bluetooth evolves over the next couple of years. It took awhile for it to be successful, but it has found a welcome home for certain classes of users. Will it do the same in cars, or even set-top boxes?
What do you think? Let me know at brad.smith@advantagemedia.com.
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