Seems like ideally suited to surreptitious surveillance
This is the same technology as UHF RFID (now Rain RFID).
Using dedicated RF carriers rather than ambient WiFi signals, we've demonstrated 100Mbps at 10uW using QAM Backscatter signalling . Similar tech was used to read neural data off of dragonflies in flight  or self-contained implantable devices .
Seems like this chip is purpose built for surreptitious surveillance.
As for surveillance. Well, it is a transceiver, hence it can be localized and tracked.
And, TaaS: Things as a Service.
Because those three are the real reasons companies put radios in consumer widgets. Getting a data stream that can be resold to marketers, getting people to buy more garbage more often, and getting people to pay a regular subscription fee to avoid having to care about buying and disposing of garbage products.
The way to fight IoS is not by restricting advancement of technology. Even if we wanted, it is already way past it. We can assume governments are years if not decades ahead.
Some maths: 0.000025W.
A typical AA battery is 1.5V / 2Ah (https://www.powerstream.com/AA-tests.htm).
1.5*2 = 3Wh.
3Wh / 0.000025W = 120000 hours runtime.
= 5000 days = 13 years, off a single AA battery.
That can't be right? That's incredible if true.
> The Wi-Fi radio runs on extremely low power by transmitting data via a technique called backscattering. It takes incoming Wi-Fi signals from a nearby device (like a smartphone) or Wi-Fi access point, modifies the signals and encodes its own data onto them, and then reflects the new signals onto a different Wi-Fi channel to another device or access point.
It sounds like the device doesn’t actually transmit its own signals, which I believe is what typically requires the most power.
However, I get the feeling from this press release that while the WiFi chip uses less power, this does nothing to reduce the power requirements of the processing chip that is actually using the WiFi chip to communicate. In the article they use a camera as an example in the diagram. Even though the WiFi component might require less juice, you’re still going to need a hefty power supply to power the camera.
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WiFi is more difficult to troubleshoot whereas Pretty much anybody can use a cat5 cable tester.
And there are already cable trays and raceways going to all of the different equipment because it uses electricity.
So in the industrial processes I’ve been involved in radio was only used outdoors and when communications cable would have had to have been strung up on poles.
Reliability and ease of troubleshooting are characteristics industry values more than labor saved running cat5, in my experience.
- Doesn't this degrade the quality of the original signal ? (i.e. some sort of destructive interference)
- Isn't it illegal to interfere in signals this way ?
It is a general FCC rule that radios and certain other types of devices are not supposed to intentionally cause interference, but in this case there shouldn't be any. Even if there was same channel interference, its not necessarily considered intentionally harmful - for example, its not illegal to use the same WiFi channel as your neighbor as long as you are within other specified technical limits such as transmit power or antenna gain. But doing so for the express purpose of interfering with them would be.
I am thinking about an API in which you assing a number (index of device) to each device and you receive a set of bits ( for example danger/no danger) without having to make any modification to wifi signals or having to select, create or buy new channels and without danger of interfering with other signals because use a lot of bandwidth.
To save power, it could even wake up at certain times, say 5 min a day, then go back to sleep until that time window arrives again.
I can do all of the software I just don't know what hardware I should be looking at.