Catch up on stories from the past week (and beyond) at the Slashdot story archive


Forgot your password?

Comment Re: Thats the usual problem with any radar system. (Score 2) 122

It is correct that a pseudo random sequence (either LiDAR or Radar or SONAR) can offset this to some extent. I imagine the receiver already has some kind of heterodyning (synchronous mixing or counting) to detect the ranging delays in a continuous stream of uniform pulses. I also imagine the hack used here uses a synchronous emission - ie; detects the incoming pulse and emits a suitably phased identical pulse in the next cycles that would seem to be coming from a nearby obstacle with a lesser delay. A pseudo random sequence can counter such a synchronous emission since the attacker has no way of knowing the delay of the next pulse in respect to the currently received one. The synchronous emission essentially should show up as background noise.

Submission + - Net Neutrality Developments In India

asvravi writes: People of India are up in arms to save their internet. The Telecom Regulatory Authority of India (TRAI) has put out a public consultation paper on regulations for net neutrality that is 118 pages long and reads like a corporate shill, favoring the big telecom. One month is given for public comment before it becomes regulation. The biggest private telecom company Airtel has introduced a special scheme which seeks to price data differently depending on which sites are being accessed. The nation is up in arms on the social media against these developments that threaten the future of net neutrality. TRAI received more than 12000 emails in a single day criticizing its actions, while the Indian telecom minister too received thousands of emails in a few hours. People started giving 0-star ratings en-masse on App stores to apps of e-commerce sites that signed up for Airtel's plan forcing them to cancel their plans. Yet others have managed to come up with a short summary of the 118 page consultation paper to make it readable and spur public opinion against it. Right To Information (RTI) applications are being filed to find out the process by which TRAI arrived at the biased proposal. Websites have sprung up — some serious ones calling people to arms ( while yet others add in a fun element to educate the common man about the seriousness of the situation ( Here is a video call-to-arms that has gone viral .

Submission + - German Airbus A320 plane crashes in French Alps (

schwit1 writes: Germanwings A320 aircraft flying from Barcelona to Düsseldorf goes down in southern French Alps with 148 on board

A distress call was made by the aircraft at 10.47am, while the plane was “in an abnormal situation”, the French transport ministry said. The crash happened shortly afterwards, it added. The aircraft disappeared off the radar at around 11.20am, Le Figaro reported. The plane dropped from 11,500 metres to 2,100 metres (38,000ft to 6,925ft) in nine minutes between 10.31am and 10.40am, air radar services said. The distress call to air traffic control in Marseilles was “mayday, mayday, mayday” and the pilot requested an emergency descent, meaning all air space had to be cleared below the route of the aircraft.

Submission + - Indian Supreme Court strikes down Sec 66A of IT Act (

CalcuttaWala writes: The Supreme Court of India, struck down as illegal, Section 66A of the Information Technology Act that was used by many government agencies to arrest people who used social media to voice opinions against powerful politicians and business leaders. This will allow many people to exercise their freedom of expression on the Internet

Submission + - Micromax Remotely Installing Unwanted Apps and Showing Ads

jones_supa writes: Reports are coming in that users of certain devices by Indian phone manufacturer Micromax noticed apps being silently installed without their consent or permission. Uninstalling these apps won't help, as they will be automatically reinstalled. Alternatively, instead of downloading apps, the phone might litter the UI with stack of notifications which are advertisements for online stores and other apps. It turns out that the "System Update" application is responsible for all of this. When starting to tear down the application (which is actually called FWUpgrade.apk on the filesystem), the first thing you notice is that it’s a third-party application. A Chinese company named Adups developed it as a replacement for the stock Google OTA service. The article shows the potential abilities of this app and how Micromax customers can work around the disruptive behavior.

Submission + - Battery with a billion holes (

Taco Cowboy writes: A battery which is made up of tiny nanopores has been created by researchers from University of Maryland. Each of the nanopores holds electrolyte to carry the electrical charge between nanotube electrodes at either end, and acts as if a very tiny battery

According to Chanyuan Liu, a graduate student in materials science & engineering, says that it can be fully charged in 12 minutes, and it can be recharged thousands of time, and that the research team has already identified ways to increase the power of the batteries by ten times

The team consists of UMD chemists and materials scientists who collaborated on the project: Gary Rubloff , director of the Maryland NanoCenter and a professor in the Department of Materials Science and Engineering and in the Institute for Systems Research; Sang Bok Lee, a professor in the Department of Chemistry and Biochemisty and the Department of Materials Science and Engineering; and seven of their Ph.D. students (two now graduated)

Many millions of these nanopores can be crammed into one larger battery the size of a postage stamp. One of the reasons the researchers think this unit is so successful is because each nanopore is shaped just like the others, which allows them to pack the tiny thin batteries together efficiently. Coauthor Eleanor Gillette's modeling shows that the unique design of the nanopore battery is responsible for its success, and the space inside the holes is so small that the space they take up, all added together, would be no more than a grain of sand

The entire design of the battery involves each of its nanobattery components being composed of an anode, a cathode, and a liquid electrolyte confined within the nanopores of anodic aluminium oxide, which is an advanced ceramic material. Each nanoelectrode includes an outer ruthenium nanotube current collector and an inner nanotube of vanadium pentoxide storage material. These together form a symmetric full nanopore storage cell with anode and cathode separated by an electrolyte region. The vanadium pentoxide is treated with lithium at one end to serve as the anode, with pristine vanadium pentoxide at the other end serving as the cathode

Submission + - Logitech Aims To Control the Smart Home (

An anonymous reader writes: Household devices are getting smarter these days: the so-called internet of things is bringing software-controlled thermostats, lighting, and other appliances into the mainstream. Many companies are fighting for a piece of the pie, but Logitech is taking a different approach. They're mostly known for computer peripherals, but they also make multi-function remote controls, and now they're trying to build remotes that will control all of a home's smart devices. "Logitech doesn’t want to own the device, it wants to own the app experience. But to do that, it had to build a software overlay and a controller that would convince people to put it in their homes. So it’s offering a $100 hub that combines IR, Wi-Fi, Bluetooth and RF that will let you use the Logitech Harmony app to control gear that uses those protocols. This means if you have a SmartThings, a Peq or a Lutron hub, the Wi-Fi in the Logitech device will let you control the others’ gear from Logitech, which so far seems to have a much nicer interface." They've worked out partnerships with a lot of companies that are big in the home, like Nest, Honeywell, and Philips, all of whom seem to want this extra layer of control for the user.

A rock store eventually closed down; they were taking too much for granite.