Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror
×

Comment No, it's not anonymous. It's full tracking. (Score 4, Informative) 261

Here's a more technical discussion from NHTSA. At page 74-75, the data elements of the Basic Safety Message I and II are listed. The BSM Part I message doesn't contain the vehicle ID, but it does contain latitude and longitude. The BSM Part II message has the vehicle's VIN. So this is explicitly not anonymous.

Back in the 1980s, when Caltrans was working on something similar, they used a random ID which was generated each time the ignition was switched on. That's all that's needed for safety purposes. This system has a totally unnecessary tracking feature.

Most of this stuff only works if all vehicles are equipped. It also relies heavily on very accurate GPS positions. However, there's no new sensing - no vehicle radar or LIDAR. The head of Google's autonomous car program is on record as being against V2V systems, because they don't provide reliable data for automatic driving and have the wrong sensors.

If something is going to be required, it should be "smart cruise" anti-collision radar. That's already on many high-end cars and has a good track record. It's really good at eliminating rear-end collisions, and starts braking earlier in other situations such as a car coming out of a cross street. Mercedes did a study once that showed that about half of all collisions are eliminated if braking starts 500ms earlier.

V2V communications should be an extension of vehicle radar. It's possible to send data from one radar to another. Identify-Friend-Foe systems do that, as does TCAS for aircraft. The useful data would be something like "Vehicle N to vehicle M. I see you at range 120m, closing rate 5m/sec, bearing 110 relative. No collision predicted". A reply would be "Vehicle M to vehicle N. I see you at range 120m, closing rate 5m/sec, bearing 205 relative. No collision predicted". That sort of info doesn't involve tracking; it's just what's needed to know what the other cars are doing. It's also independent of GPS. Useful additional info would be "This vehicle is a bus/delivery truck, is stopped, and will probably be moving in 5 seconds.", telling you that the big vehicle ahead is about to move and you don't need to change lanes to go around it.

Comment Address space randomization does not help. (Score 5, Interesting) 98

64-bit systems should remain safe if they are using address space randomization.

Nah. It just takes more crashes before the exploit achieves penetration.

(Address space randomization is a terrible idea. It's a desperation measure and an excuse for not fixing problems. In exchange for making penetration slightly harder, you give up repeatable crash bug behavior.)

Comment Welcome to the free market (Score 1) 341

Where providers are free to gouge and customers are free to... well... complain on Slashdot, but that's about it.

It's only actually free when there's freedom. Freedom to choose between genuinely different providers is a start. If they go to the same tier 2 provider, then the that will define the prices and services, so isn't a choice at all. If they ARE the tier 2, then they're the ultimate source of services and pricetag for all the tier 3s out there.

But there has to be more, since bandwidth throttling dictates bandwidth availability downstream. You can't sell what isn't there - unless you're Time-Warner or Comcast, of course. Try that with a physical product ("It'll cost you $elebenty, payable now, no refund, and if it doesn't do what we claim, that's not a lemon, that's the fault of some unidentified someone doing something somewhere somehow and we'd rather screw you than bother them"). So, freedom to know what you're actually buying and freedom to use statuary rights to obtain that product or a refund.

This is actually one reason I'm a little unhappy with free software. It has been telling vendors that it's ok to not provide what is offered. Not so much by actually doing that - free software has been, in general, superb about being up-front about what it can and cannot do, known defects and limitations, etc. More by saying in the license that the producer is entitled to lie through his teeth without consequence. A quick look at Oracle's conduct shows that vendors have paid very close attention to that clause.

Free Software relies on there being a viable alternative, that users can go elsewhere if dissatisfied. The resilience to fixing bugs in GCC and GLibC, in present and prior administrations, demonstrate that when viable alternatives are scant, such software is too complex to fork or replace unless it gets really, really bad. Which it has occasionally done.

When it comes to cable companies, it's infinitely worse. You're not in a position to run fibre from your home to an alternative tier 2 in another State. Partly because of expense, partly because laws governing interstate activities make it impossible for private individuals, and partly because the cable companies would raise all hell, three quarters of bloody murder and a dash of pint of high water to stop you. Which would not be hard for them, all they need to do is to persuade the tier 2 provider to not sell the capacity. If that failed, they could keep you tied up in knots with the FCC over whether you were an unlicensed telecom operator or not. Mind you, some of you might like knots. I dunno. If all else failed, they could SWAT the people running the cable, get you listed for suspected terrorist ties, or just repeatedly run a backhoe through your cable until you got the message.

You have no choice. You have no freedom. The cable operators have been redefining "monopoly" and "telecommunications" to whatever serves their purpose, not yours, and on multiple occasions. They have been free to do so because everyone likes simplified services and nobody in the States is going to vehemently oppose the "market at work". Even when it clearly doesn't. Not until it is far, far too late to stop things happening.

And we're way past it being too far. It was too far when telecos started replacing copper for fibre at select spots. Supposedly to improve service (which never improved). The reality was that DSL companies competing with the teleco all went out of business where this happened. No great surprise, you can't run DSL over fibre and everyone knew it. It was too late when telephonic "service of last resort" stopped being mandatory in many States. It was too late when ADSL was all private users could buy, SDSL was only sold to select businesses.

It was too late when rival multistate networks got bought up by the Big Telecos with not a murmur from anyone.

It was not because these were fatal in themselves, it's because people had become too stupid and too utterly dependent on being spoonfed by corporate giants (who are far less efficient than any big government ever thought of being, except at defrauding customers). The time for people to learn to think had passed. There wasn't anything left to think about. There were no examples to learn from. All that was left was a self-inflicted oblivion.

It's as if a hundred billion endpoints all screamed out and then fell silent.

And no Consumer Jedi to notice or care.

Comment Re:Can we get a tape drive to back this up? (Score 1) 316

No. At least not one that makes sense for storing one or two copies of a consumer hard drive. And you're stuck with a huge investment in one generation of tapes, unlike HDDs where you can gradually buy bigger and better drives. I'd rather see hard drives get cheaper and tape not than nothing getting cheaper at all. What's the real practical downsides to HDDs for the average person anyway? They're standard and can be hooked up to any computer (real fun if your tape drive dies on you or is lost/stolen). They're random access. Without a tape robot it's not more convenient. Without a environmental controlled tape vault I wouldn't trust their longevity claims.

Personally I think the ideal consumer backup solution is three hard drives, one offline next to your computer and one online hooked up via high speed Internet. Anything that nukes your files can't get to your offline copy even if the online copy is hacked or accidentally sync'd, anything that destroys all local copies like theft or a fire can't get to your online copy. One drive goes bad and you should still have two good copies though RAID1 on your main computer would be nice, just to avoid the downtime.

And for what it's worth, most consumer data isn't really worth backing up as they're just a cache to the Internet. I just checked and my total personal stuff (photos, videos, documents, source code, whatever) is 370GB, while I got 10TB+ of other things. And a lot of that which goes under personal is actually "backed up" in that friends or family got copies too, so strictly speaking I could do with even less. I actually see they have 512GB thumb drives now (at insane prices), actually my whole backup could fit in that now.

Comment Re:What's the max bandwidth of coax cable? (Score 2) 341

Well, from the looks of it a coax cable can carry anywhere from 1000-1500 6MHz channels @ 42.88 Mbit/s so 42-63 Gbit/s, subtract TV channels (200 @ 10 Mbit? = 2 Gbit/s), divide by number of subscribers sharing the rest. It shouldn't take that much money to cut a loop in half though, just pick a midpoint and run two coax cables straight to the central office. Considering how rapidly things progress with competition I really doubt there's any technical difficulty in delivering more.

Comment What's MediaGoblin? Do we care? (Score 4, Informative) 73

The Slashdot article doesn't tell me what MediaGoblin does, or what it's for. Nether does the MediaGoblin site. The documentation, in typical Gnu syle, starts out with "how to participate" and continues with installation instructions.

It's sort of like Wordpress, but with different features and support for streaming media. There's a list of sites that use it. Of the public sites listed, all but one are demos of MediaGoblin. The first site on the list that isn't a a demo and works is this set of baby pictures. There's one site that lets you upload stuff. It's a collection of uploaded pictures with no organization.

This seems to be a publishing system for people with nothing to say.

Comment Re:Backward-thinking by the DMV (Score 1) 506

May the computer totally fail to realize that the bridge is about to give out or the building about to collapse or an avalanche about to hit or a dam about to burst or you're driving right into a rioting mob or some other disastrous event? Even if I assume that the car will never, ever throw the controls to me and expect me to take over doesn't exclude the possibility that I want to take immediate physical control to avoid some kind of danger that goes above and beyond a computer's understanding of traffic rules.

Comment Microsoft did something like this once before (Score 4, Interesting) 120

Back in the 1990s, Microsoft developed something similar. Their idea was to render frames in layers, with the more distant or less active layers rendered less often. if the viewpoint changed, the background layers were scrolled, rotated, or transformed to match, rather than being re-rendered immediately. It never caught on, because graphics hardware became fast enough to re-render everything on for each frame.

This new thing is similar. Mispredicted frames are viewpoint-warped as a temporary measure so the user sees something. The image is wrong, but close enough to look OK until a new rendered frame is sent. It looks OK for Doom, on which it was tested, because Doom is mostly about the shooter and the opponents moving; there's not much general activity in the background. GTA IV/V would probably look much worse than normal.

The whole concept represents a desperate attempt to make something "cloud-based" that shouldn't be.

Comment The footage doesn't matter. (Score 1) 300

The publicity is everything to the terrorists. Censorship is, in some ways, even better for them, as rumours (which they can start) can make unseen footage far worse than reality and the Streisand Effect works just fine, bringing people into discussions.

No, this isn't something you can fix in the middle. You have to fix the users, instead. You have to damp down emotional responses and increase rational duscussion. There is no terrorism without fear, there are no causes without fear.

Eliminating the instinct (it's not an emotion, it's baser than that) of fear us impossible - and probably unwise if possible. But damping it, and raising calm rationality, is possible.

And it will not only make video nasties unimportant, it will make the terrorists who make them an endangered species.

You can't fight terror with blinkers or peril-sensitive sunglasses, or even with weapins. Because terror is in the mind, be it their mind or yours. And to fight in your mind the ghoulies and ghosties and things that go bump in the night, a warplane is a very messy, expensive and stupid solution. You can only fight mind with mind.

Comment Re:My opinion on the matter. (Score 2) 826

Skepticism != Cynicism.

When the distinction becomes blurred, you no longer have skepticism.

All things should be questioned. That doesn't mean forever.

All things should be subject to scrutiny. That doesn't mean wasting cycles.

Once an issue is settled, it's settled until new data brings it back into question.

Things should be fixed before they break, not after, but only with something verifiably better. If it's not verified, it's not better.

Enough of the common sense that you yung 'uns lack. Back to the boot process.

The original boot process was never great. A very limited range of states, temperamental scripts, poorly documented behaviours, wide variation in precise behaviour between implementations, potential vulnerabilities, ghastly completion time, horrible dependencies, etc.

This has been replaced with an alternative that is new, shiny and creates exactly the same problems but in a completely new way.

A pox on both your houses.

Still, six is better than the two runlevels offered by Windows, which are even slower, even less stable and even less secure. What's worse than pox. I know, Ebola on Windows.

The lot of you are a disgrace. All three systems are less designed than congealed. And the Unix man pages were written by Vogons. Drunk Vogons. Practicing poetry whilst smashing snails with hammers.

Comment Re:My opinion on the matter. (Score 1) 826

Like Windows, OS X, iOS, Android and.... who exactly has a network transparent protocol? The X protocol was designed when X was essentially drawing boxes and text to a frame buffer. Today the GPU is by far the second most powerful - and in some ways, the most powerful computing device in a computer. The absolutely biggest, fastest link is between your CPU and GPU with a 16x PCIe 3.0 link (15.75 GB/s) and companies are working hard to create heterogeneous computing where they even access the same memory pool so you don't even have the bus overhead. Putting a network in the middle is like replacing a mainline water pipe with a plastic straw.

The lie is that you can do network transparency without compromise. Just because the protocol is transparent it's still a straw and applications don't know they only get a sip and not a fire hose of bandwidth. Those who assume they will fail miserably and are practically unusable over a network since there's no way for the protocol to scale down the traffic. If you've got a fast network, do RDP/VNC. If you have a bit of bandwidth, do a web interface. If you have very little bandwdth, do text mode SSH. X forwarding? If I absolutely need to have an X app running (no command line, no web interface) and I'm bandwidth constraint, but it's the least bad solution to a bad situation in the first place.

Comment Re:We need positive Sci-Fi. (Score 1) 108

You do realize that if they actually did that /. would be howling about 1984 and Idiocracy and how it's NSA propaganda to "trust the system" and stop thinking for themselves with pages full quoting Franklin about security and liberty. After all it had to be about humanity willingly handing over control, we already had the story were they assume control by force and that's a villain story (I, robot). Meanwhile regular people like to identify with their heroes, the villains may be monsters or aliens or robots but the heroes are 99.99% human(oid). Nobody cares that you can't identify with Sauron or Smaug or King Kong or the Borg, but for a hero AI that's going to be tough.

You have it in the Swedish series "Äkta människor" where humanoid robots = hubots are blurring the lines, but it's more of a rebellion/independence story where they're breaking out of servitude and they're certainly not humanity's heroes. As an AI story it's more along the lines of Her, with humans and robots getting emotionally involved in each other which is probably not the kind of movie you were looking for. The superior intelligence kind of robot wouldn't fit in there, if you can't care about the hero I suppose you could care about the victims of whatever conflict that is drawn up. But those poor, helpless humans who can't fix their own situation but need outside help? That's a bit dreary.

Besides, I think that's a bit too similar to actual problems in the world today, movies like to show empowerment. People sympathize with those who are powerless victims, but they don't want to identify with them. And if the AI is smart enough to control bad guys, wouldn't it also be smart enough to control the good guys? I think it would be very hard to avoid it ending up as a giant puppeteer who's now pulling all the strings. And that's again more of a creepy story where you're being manipulated without you even knowing it, like the Matrix before you take the blue pill. There is the War Games computer who learns that the only way to win is not to play but I'm really struggling to come up with another computer "hero" story.

Slashdot Top Deals

With your bare hands?!?

Working...