FutureWatch: Cheap, difficult to detect, short-range, long-term bugs.

Researchers at the University of Washington (UW) have pioneered a technique where everyday objects can be embedded with transmitters that piggyback ambient FM signals to send data to nearby smartphones and radios using almost no power. 

The technique makes used of backscattering, which is the reflection of waves, particles, or signals back in the direction they came from. The system uses a low-power reflector to encode specific audio or data on top of reflected signals from an existing FM broadcast, with the data sent on an adjacent band so as not to interrupt any current radio transmissions.

The key benefit of the technology is that it has an extraordinarily low level of power consumption, meaning that it can easily be incorporated into everyday objects at a low cost...



The antennas are made of thin copper tape and can be simply embedded into objects like advertising posters or articles of clothing. Initial demonstrations of the technique showed the total power consumption of a transmitter embedded into a poster to be as little as 11 microwatts – an output that could run uninterrupted off a small coin-cell battery for two years...

The UW team has produced two working proof-of-concept prototypes demonstrating the technology. The first was dubbed a "singing poster" that transmitted portions of a band's music to a smartphone up to 12 ft (3.6 m) away, or a car up to 60 ft (18 m) away.  more

FutureWatch: Cheap, difficult to detect, short-range, long-term bugs. The traditional police "wire" invisibly woven into undercover investigators' clothing.  ~Kevin

FutureWatch: Powerless Bugs or Teslabestiola II (update)

Back in 2013, the Security Scrapbook alerted you to Ambient Backscatter as a developing technology with extreme potential, including electronic surveillance / eavesdropping. 

At that time I said, "Ambient Backscatter research is in its infancy. Imagine the possibilities. Technical espionage could see its biggest advancement since the transistor."

Today, Jeeva Wireless, is developing this technology and is about to come out of stealth mode. 

The technology is so interesting, NASA has posted Federal contract opportunity NND1710133Q, "a sole source contract under the authority FAR 13.106-1(b)(1)(i)."

Here is the update...

"A group of University of Washington engineers has raised capital to develop and commercialize a power-efficient way to generate WiFi transmissions.


Jeeva Wireless just reeled in a $1.2 million round, co-founder Shyamnath Gollakota confirmed with GeekWire. He declined to provide more details about the cash and how Jeeva will use it, as the Seattle startup is still in stealth mode.

The company’s co-founders are the same UW researchers who co-authored a study last year for a Passive Wi-Fi system that can generate WiFi transmissions using 10,000 times less power than conventional methods.

Not even low-power options such as Bluetooth Low Energy and Zigbee can match the system’s energy efficiency, based on the study that earned the UW team a place on MIT Technology Review’s top-ten list of breakthrough technologies in 2016. With the fresh funding, it appears that the company is ready to commercialize its innovation" more