An anonymous reader quotes a report from Tom’s Hardware: Resin printer company Peopoly created quite a buzz with the unveiling of a prototype beltless FDM 3D printer, the Magneto X, at the East Coast RepRap Festival. The new printer is a desk top machine with a huge 400 x 300 x 300 mm build volume and print speeds up to 800mm/s. It borrows a design feature seen on CNC machines: magnetic linear motors. Normally, 3D printers move their components with rotating stepper motors attached to gears and pulleys. The linear motor can be thought of as a flat, unrolled motor with the “rotor” attached to the moving component — the tool head — and the stator forming a track along one axis. Dubbed the “MagXY” system, the tool head seems to levitate across the gantry without obvious means. It has a top print speed of 800 mm/s with a max acceleration of 22,000 mm/s, which would make it faster than modern Core XY printers from Bambu Lab.

Peopoly is using and supporting both Klipper firmware and OrcaSlicer, which founder Mark Peng said greatly helped speed up their development time. […] Peopoly is leaning hard into the Open Source community. Not only have they become backers of Klipper firmware, they are also using — and supporting — Open Source OcraSlicer. The Magneto X’s nozzles are compatible with the popular E3D’s V6 volcano which suggests the machine will be open to modification by users. Peopoly also states its machine can be used without joining a cloud-based system and promises customer data will not be collected.

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Source: Slashdot – 3D Printer Uses Magnets To Break Speed Limits

Kiley Price writes via Inside Climate News: In a new initiative announced on Tuesday, the U.S. Fish & Wildlife Service is working with the nonprofit Revive & Restore and other partners to create a “genetic library” of the country’s endangered species — before it’s too late. Through a process called biobanking, FWS field staff are gathering biological samples such as blood, tissues and reproductive cells from animals to be cryogenically preserved at extremely low temperatures (at least -256 degrees Fahrenheit) and stored at a USDA facility in Colorado. The samples will also be genetically sequenced and this information will be uploaded to a publicly available database called GenBank, where researchers can study them and compare their genomes to other members of their species.

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Source: Slashdot – USFWS Is Creating a Frozen Library of Biodiversity To Help Endangered Species

Long-time Slashdot reader RockDoctor writes: Regardless of their other potential benefits, modern cars, and modern electric cars in particular, involve complex networks of computer code, hardware, and servo systems cooperating (?) to deliver services to the user, like acceleration, steering and braking. Slashdot nerderati know better than most that such complex networks can never show unexpected, non-designed behavior, due to the infallibility of hardware, program coders and system designers… Yeah. Right. “I’ll have some of what he’s been smoking!” That’s Musk-grade optimism.

On Sunday evening, a middle-aged driver in a “brand new” vehicle found it would not decelerate below 30mph (50kmph). He retained steering control, and avoided crashing until police vehicles “boxed in” his vehicle and helped him exit into a police van (most have sliding side doors) from the moving vehicle. The police then “carried out a controlled halt” on the unmanned vehicle, stopping it from driving away with the van’s brakes until a roadside assistance technician arrived 3 hours later and managed to shut it down. “[W]hen the [technician] got to me […] later, he plugged in the car to do a diagnostic check and there was pages of faults,” said the “kidnapped” driver from Glasgow. “He said he had never seen anything like it and decided he was not willing to turn the engine on to see what was wrong.”

By inference, the vehicle did not have a mechanical brake (“hand brake”: English; “parking brake”: American), which should have been able to keep the vehicle halted regardless of the motor’s actions (even if a “clutch” did get burned out). From the only time I’ve been inside an electric car, I can’t say if that is normal; it’s certainly something I’ll look for if I ever rent another. Had the failure happened at 10 a.m. in the morning, not 10 p.m. in the evening, the body count could have been … substantial.

A dumb question, stemming from my only use of an electric car: do they have a weight sensor under the driver’s seat that locks-out the main motor unless there is (say) 30kg in the driver’s seat? Most have some such sensors — they trigger the “seatbelt not fastened” alarm or silence it for empty seats — but whether they can override the drive system … ?

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Source: Slashdot – Kidnapped By a Runaway Electric Car

Researchers from the University of Maryland (UMD) were able to easily evade the current methods of AI watermarking during testing and found it even easier to add fake emblems to images that weren’t generated by AI. “But beyond testing how easy it is to evade watermarks, one UMD team notably developed a watermark that is near impossible to remove from content without completely compromising the intellectual property,” reports Engadget. “This application makes it possible to detect when products are stolen.” From the report: In a similar collaborative research effort (PDF) between the University of California, Santa Barbara and Carnegie Mellon University, researchers found that through simulated attacks, watermarks were easily removable. The paper discerns that there are two distinct methods for eliminating watermarks through these attacks: destructive and constructive approaches. When it comes to destructive attacks, the bad actors can treat watermarks like it’s a part of the image. Tweaking things like the brightness, contrast or using JPEG compression, or even simply rotating an image can remove a watermark. However, the catch here is that while these methods do get rid of the watermark, they also mess with the image quality, making it noticeably worse. In a constructive attack, watermark removal is a bit more sensitive and uses techniques like the good old Gaussian blur.

Although watermarking AI-generated content needs to improve before it can successfully navigate simulated tests similar to those featured in these research studies, it’s easy to envision a scenario where digital watermarking becomes a competitive race against hackers. Until a new standard is developed, we can only hope for the best when it comes to new tools like Google’s SynthID, an identification tool for generative art, which will continue to get workshopped by developers until it hits the mainstream. Further reading: Researchers Tested AI Watermarks — and Broke All of Them

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Source: Slashdot – Researchers Say Current AI Watermarks Are Trivial To Remove

An anonymous reader quotes a report from ZDNet: Microsoft’s proprietary protocol, Remote Network Driver Interface Specification (RNDIS), started with a good idea. It would enable hardware vendors to add networking support to USB devices without having to build them from scratch. There was only one little problem. RNDIS has no security to speak of. As Greg Kroah-Hartman, the Linux Foundation fellow responsible for stable Linux kernel releases, wrote in November 2022 on the Linux Kernel Mailing List (LKML), “The Microsoft RNDIS protocol is, as designed, insecure and vulnerable on any system that uses it with untrusted hosts or devices. Because the protocol is impossible to make secure, just disable all RNDIS drivers to prevent anyone from using them again.”

He added, in another message, “The protocol was never designed to be used with untrusted devices. It was created, and we implemented support for it, when we trusted USB devices that we plugged into our systems, AND we trusted the systems we plugged our USB devices into.” That’s no longer the case. Kroah-Hartman concluded, “Today, with untrusted hosts and devices, it’s time just to retire this protocol. As I mentioned in the patch comments, Android disabled this many years ago in their devices, with no loss of functionality.”

[…] But now, sick and tired of having a built-in Windows security exploit in Linux, Kroah-Hartman has decided that enough was enough. He’s disabled all the RNDIS protocol drivers in Linux’s Git repository. That means that while the RNDIS code is still in the Linux kernel, if you try to build Linux using this new patch, all your RNDIS drivers will be broken and won’t build. This is one step short of purging RNDIS from Linux.

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Source: Slashdot – Linux Tries To Dump Windows’ Notoriously Insecure RNDIS Protocol

Jason Koebler writes via 404 Media: An independent repair shop in Germany has invented a tool that can break through anti-repair locks Apple has put on a specific sensor on the MacBook Pro and MacBook Air. The Nerd.Tool.1 was invented by Stephan Steins of Dortmund’s Notebook Nerds repair shop. It is specifically designed to allow independent repair shops to replace the display angle sensor on broken MacBook Pro and MacBook Air laptops. This was formerly a replacement that only Apple could do because the replacement part had to be “calibrated” with the specific device, which only Apple could do, until now. This sensor detects when the laptop lid is closed, and turns the screen and fan off, and puts the laptop to sleep. If it’s broken, the laptop’s screen will remain on even when the lid is closed, which drains the battery, can keep the fans running, and generally shorten the life of the computer.

The Nerd.Tool.1 recalibrates replacement sensors, allowing repair techs to replace them without any fuss. “We are calibrating new sensors nearly the same way Apple does,” Steins told me. “They can do it via their T2 [security chip] or their M1/M2 chips. We are using the nerd.tool.1 for this task. The sensor holds all the data. It is not serialized or paired to the logic board so we are just calibrating it.” “We broke Apple’s lock,” independent repair advocate and repair pro Louis Rossmann explained in a YouTube video demoing the Nerd.Tool.1. “To whoever it is at Apple who decided to not make this available to technicians, ‘Fuck you, we win,'” Rossman said.

“We are selling the nerd.tool.1 to be able to spend time in developing other solutions,” added Steins. “We will do our best to get nerd.tool.2 to fix other issues which repair shops are facing. The response has been awesome! The community is very kind, which shows how painful these missing tools are for many independent repair shops.”

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Source: Slashdot – DIY Tinkerer Invents MacBook Tool That Breaks Apple’s Repair Locks

An anonymous reader quotes a report from Ars Technica: You can now reply to an email just like it’s an instant messaging chat, tacking on a “crying laughing” emoji to an email instead of replying. Google has a whole support article detailing the new feature, which allows you to “express yourself and quickly respond to emails with emojis.” Like a messaging app, a row of emoji reaction counts will appear below your email now, and other people on the thread can tap to add to the reaction count. Currently, it’s only on the Android Gmail app, but it’s presumably coming to other Gmail clients.

Of course, email is from the 1970s and does not natively support emoji reactions. That makes this a Gmail-proprietary feature, which is a problem for federated emails that are expected to work with a million different clients and providers. If you send an emoji reaction and someone on the email chain is not using an official Gmail client, they will get a new, additional email containing your singular reactive emoji. Google is not messing with the email standard, so people not using Gmail will be the most affected.

Another weird quirk is that because emoji reactions are just emails (that Gmail sends to other clients and hides for itself), any emoji reactions you send can’t be taken back. There’s only Gmail’s “Undo send” feature for taking back reactions, which delays sending emails for about 30 seconds, so you can second-guess yourself. After that, you’re creating a permanent emoji reaction paper trail. […] If the idea of emoji reactions to email has you selecting the puke emoji, as far as we can tell, there’s no way to just turn this off. The report notes that this new feature won’t work on business or school accounts. “Emoji reactions also aren’t available for group email lists, messages with more than 20 recipients, emails on which you’re BCC’d, encrypted emails, and emails where the sender has a custom reply-to address.”

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Source: Slashdot – Gmail Unleashes ‘Email Emoji Reactions’ Onto an Unsuspecting World