At a dollar a chip, ZigBee transceivers could even be built into toasters and coffee pots.
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Already, a handful of meter makers have begun incorporating ZigBee transceivers into their products to do just that.
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Magnets in avalanche transceivers, radios, personal locator beacons (PLBs) and cameras may also affect the map reading tool, she said.
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The minimum was 13 nodes or transceivers, while the rate of incorrect breathing measurements fell to zero when 19 nodes were used.
ENGADGET: Researchers use wireless network to monitor breathing, could save lives
It installed 33 RangeLAN 2 series radio frequency transceivers, or access devices, in the drop ceilings above classrooms, the cafeteria and the library.
In fact, Novak says he had to take out about half of the transceivers because he found they were spaced too close together and were creating crosstalk.
For example, students tended to wait for the professor to start the class, then they all booted up at once, which blew out a couple transceivers, Kaufman says.
When he reduced the number of transceivers, performance actually improved.
"A search and rescue team may arrive at a collapsed building and throw transceivers into the rubble, hoping to detect the breathing of anyone still alive inside, " Patwari and colleagues write.
ENGADGET: Researchers use wireless network to monitor breathing, could save lives
As Hack A Day notes, one can easily question the wisdom of "a pair of microwave transceivers and a LiPo battery strapped directly over one's eyes and brain, " but that's the price of progress, right?
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He adds that it will be a while before Intel is selling optical transceivers, checks find that Cisco and other players are likely to launch silicon photonics-based transceivers for 100G applications in the data center in 2013 and 2014.
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In a new study, Patwari showed a network of 20 wireless transceivers placed around a hospital bed could reliably detect breathing and estimate breathing rate to within two-fifths of a breath per minute based on 30 seconds of data.
ENGADGET: Researchers use wireless network to monitor breathing, could save lives
It's no secret that Bluetooth devices that are in discoverable mode are... well, discoverable, so we figure it was just a matter of time before an independent organization set up a massive network of transceivers to track their every move.
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Each of the 20 transceivers or "nodes" can transmit and receive to the other 19, meaning there can be up to 380 measurements (20 times 19) of radio signal strength within a short period of time (the transceivers transmit one after the other).
ENGADGET: Researchers use wireless network to monitor breathing, could save lives
While he estimates it will be five years until such a product is on the market, Patwari says a network of wireless transceivers around a bed can measure breathing rates and alert someone if breathing stops without any tubes or wires connected to the patient.
ENGADGET: Researchers use wireless network to monitor breathing, could save lives
Because the technique uses off-the-shelf wireless transceivers similar to those used in home computer networks, "the cost of this system will be cheaper than existing methods of monitoring breathing, " says Neal Patwari, senior author of a study of the new method and an assistant professor of electrical engineering.
ENGADGET: Researchers use wireless network to monitor breathing, could save lives
The standard's global deployment is pervasive, and the span of stakeholders in its ongoing development is sweeping, including network component and system manufacturers (optical transceivers, cabling, integrated circuit, powering devices, switches and network interface cards, for example) and network, software and bandwidth providers, as well as LAN and Internet users worldwide.
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Unlicensed National Information Infrastructure (U-NII) devices today operate in 555 megahertz of spectrum in the 5 GHz band, and are used for short range, high speed wireless connections including Wi-Fi enabled local area networks and fixed outdoor broadband transceivers used by wireless Internet service providers to connect smart phones, tablets and laptops to the broadband network.
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