Hackaday Links: October 19, 2025
After a quiet week in the news cycle, surveillance concern Flock jumped right back in with both feet, announcing a strategic partnership with Amazonās Ring to integrate that companyās network of doorbell cameras into one all-seeing digital panopticon. Previously, weād covered both Flockās āUAVs as a serviceā model for combating retail theft from above, as well as the somewhat grassroots effort to fight back at the companyās wide-ranging network of license plate reader cameras. The Ring deal is not quite as āin your faceā as drones chasing shoplifters, but itās perhaps a bit more alarming, as it gives U.S. law enforcement agencies easy access to the Ring Community Request program directly through the Flock software that they (probably) already use.
In the event of a crime, police can use the integration to easily blast out a request for footage to Ring owners in the vicinity. The request is supposed to contain details of the alleged crime, including its time and location. Owners are free to comply with the request or ignore it at their discretion, and there is supposed to be no way for the police to track who declines a request, theoretically eliminating the potential for retaliation. On the one hand, we see the benefit of ready access to footage that might be needed quickly to catch a suspect or solve a crime. But on the other hand, it just seems like thereās nowhere you can go anymore where there isnāt a camera ready to be used against you.
Remember āSolar Freakinā Roadwaysā? We sure do, and even though the idea of reconfigurable self-powered paving tiles didnāt seem to be going anywhere the last time we checked, we always did like the idea of self-lighted roads. But pluggable modules with solar panels and LEDs built to withstand being run over by cars and trucks and the rigors of Mother Nature might be a more complicated way to go about it than, say, painting the road with glow-in-the-dark paint. Unfortunately, that doesnāt seem to work much better, as revealed by a recent trial in Malaysia.
Admittedly, the trail was limited; a mere 245 meters of rural roadway received the phosphorescent paint markings. The paint absorbed light during the day and emitted a soft green glow at night, to the delight of drivers who praised its visibility. For a while, at least, because within a year or so, the paint had lost most of its power. At 20 times the cost of normal roadway marking paint, it wasnāt cheap either, probably thanks to the europium-doped strontium aluminate compounds that gave it its glow. Itās too bad the trial didnāt work out, because the markings looked fantastic.
Youāve heard about Power-over-Ethernet, but how about Power-over-Skin? The idea comes from a group at Carnegie-Mellon University, and is aimed at powering a network of battery-free wearables using the surface of the skin as the only conductor. To make it work, the researchers use a 40-MHz RF transmitter thatās kept in the userās pocket and couples with the skin even through layers of fabric. Devices on the userās skin can pick up the signal through a tuned circuit and rectify it to power a microcontroller. The 40-MHz frequency was selected in part because it offers head-to-toe coverage, but also because itās too high to cause potentially painful āmuscle activationā or local heating. Talk about your skin effect!
If you currently crave a trip to one of the many national parks or monuments in the United States, you might want to hold off until the government shutdown is resolved. Until then, youāll have to be content with virtual tours such as this one for the Hanford B Reactor site, which, along with Los Alamos in New Mexico and Oakridge in Tennessee, is part of the Manhattan Project National Historic Park. The virtual tour is pretty cool, and everything inside the reactor building, from the sickly green paint to the mid-century furniture, seems to have been restored to what it would have looked like in the 1940s. The Fallout-esque control room is a treat, too. But alas, thereās no virtual gift shop on the way out.
And finally, a bit of electronics history with this fascinating video about how early home computers glitched their way into displaying color. On paper, the video interface on the TRS-80 Color Computer was only capable of generating a monochrome signal. But according to Coco Town, a carefully crafted monochrome signal could convince an analog NTSC television to display not only white pixels but also red and blue, or blue and red, depending on when you hit the reset button. Itās an interesting trip through the details of color TV, and the way that the standard was exploited to make color graphics on the cheap is truly a hack worth understanding. Enjoy!
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