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Ask Slashdot: Best Biometric Authentication System?

Ihlosi Re:RFID/card scanner (118 comments)

RFID, chips, cards, etc. have the SAME "problem" as IP addresses: they don't identify the PERSON, they just identify the identification. If someone else is holding the identification, all bets are off.

The author of the article mentioned using a simple login/password, but rejected the idea because it was too much hassle - not because someone else could use the login/password combination. This means that the employees can be trusted not misuse their credentials.

8 hours ago
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Ask Slashdot: Best Biometric Authentication System?

Ihlosi Why biometrics? (118 comments)

Can't you just (wirelessly) scan an ID card/badge?

9 hours ago
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NASA Remasters 20-Year-Old Galileo Photographs of Jupiter's Moon, Europa

Ihlosi Re:never send a robot to do a man's job... (38 comments)

Want to know what a human eye would see?

Not really. That far from the sun, the human eye would not get enough light to capture an accurate image.

Send the best instrument: a Mark I Eyeball.

Darwin says it's actually the latest iteration in a line of millions of eyeballs.

3 days ago
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Greenwald Advises Market-Based Solution To Mass Surveillance

Ihlosi Like corporations can't be made to follow law. (157 comments)

"Oh, your product is so secure that our services can't crack it? Well, then you can't sell it here, and possession will be made illegal."

about a week ago
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What Would Have Happened If Philae Were Nuclear Powered?

Ihlosi Re:Wouldn't it suffer eminent heat death? (519 comments)

Well, an RTG works by containing atoms that are going to change themselves into other atoms

And since you can't find enough of these atoms in nature, you'll need to produce them ... by turning other atoms into these atoms.

about a week ago
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What Would Have Happened If Philae Were Nuclear Powered?

Ihlosi Re:not a reactor. Other info (519 comments)

Fyi space probes don't reactors.

They could. In fact, a space probe on a trajectory that will not get anywhere near Earth within the nex 30k years is probably the closest thing to a safe place for a nuclear reactor that we can find.

The Soviet Union launched some reactor-powered radar satellites (RORSAT) that now sit in graveyard orbits. Some of them crashed, too.

about a week ago
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What Would Have Happened If Philae Were Nuclear Powered?

Ihlosi Re:Wouldn't it suffer eminent heat death? (519 comments)

Doesn't nuclear power work by boiling water?

No, it works by turning atoms into other atoms. What you do with the resulting heat and radiation is up to you. Whether you use it to drive a steam turbine, a Stirling engine or a thermocouple is up to you.

about a week ago
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What Would Have Happened If Philae Were Nuclear Powered?

Ihlosi It's only a 100 kg lander ... (519 comments)

... what size RTG do you want to stick on it?

about a week ago
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US School Installs 'Shooter Detection' System

Ihlosi Re:Benefits, but still misses the point... (698 comments)

One thing that I've heard about antidepressants is that they tend to increase motivation. In 99/100 cases that might cause you to finally get out of bed, take a chance on making friends, and get your life straightened out (maybe even to the point that you don't need the pills any more). Maybe in another 1/100 cases it motivates you to get out of bed and kill yourself.

The issue is that the motivation-enhancing effect and the antidepressant effect have slightly different time constants. If someone suddenly stops taking the medication, he might slip back into depression while still being motivated enough to kill himself.

about two weeks ago
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US School Installs 'Shooter Detection' System

Ihlosi Re:Dumb idea ... Lots of assumptions .... (698 comments)

Yeah, that's really been the experience here in Europe

The guy in Berlin managed to stab about thirty people. That no one died was only due to one single thing: He was drunk out of mind and didn't really want to kill anyone, so he used a small pocket knife and didn't stab people repeatedly.

about two weeks ago
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US School Installs 'Shooter Detection' System

Ihlosi Re:Dumb idea ... Lots of assumptions .... (698 comments)

Well I would like to think that if you are classified as having severe mental problems you should not be allowed to own a gun, just like having certain mental problems can suspend your drivers license.

And this leads to people who suspect they have mental disorders hiding them as long as possible instead of seeking treatment early.

about two weeks ago
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US School Installs 'Shooter Detection' System

Ihlosi Re:Dumb idea ... Lots of assumptions .... (698 comments)

Limiting guns to sane and responsible people would not help?

OOP mentioned checking for "criminal background", not for sanity or responsibility (both are not trivial to check, and it's almost impossible to monitor them in near-real time).

about two weeks ago
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US School Installs 'Shooter Detection' System

Ihlosi Re:Lock-em down (698 comments)

fire detection systems could still allow egress.. the shooter simply needs to set himself on fire to open a window.

How about the shooter setting someone else on fire?

about two weeks ago
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US School Installs 'Shooter Detection' System

Ihlosi Re:Dumb idea ... Lots of assumptions .... (698 comments)

Or that states with high gun ownership have about the same rate of non-gun murders, but more than twice as many gun murders?

I can only look at some of the neighboring countries from my perspective, and the ones with much less restrictive gun laws have about the same murder rate as the very restrictive country I live in. That's fairly factual. Less restrictive gun laws don't turn people into murderous loonies. It must be something else. Attitude? Culture?

You're wrong in a constitutionally protected way,

Not my constitution.

about two weeks ago
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US School Installs 'Shooter Detection' System

Ihlosi Re:Dumb idea ... Lots of assumptions .... (698 comments)

You have to be aware that stabbing people to death isn't easy.

Easy enough, if I look at murder statistics.

That it's intimate,

If you don't really want people dead, maybe you shouldn't try to kill them?

requires physical struggle

Only if you're attacking an alert, aware victim.

requires proximity,

Not an issue if the intended victim is unaware.

a good knowledge how to deliver deadly blows.

Knowing to stab repeatedly is enough for starters, and the upper torso is good enough as far as targeting goes. Knife murder is not a sport and there aren't any points for style.

People can run away,

If they're aware and alert. Read some accounts of stabbing sprees - in some, the attacker had stabbed one or two dozens of people and people around him weren't aware of that (nice example: Berlin, Germany. The guy was drunk and didn't really want to kill anyone, and still stabbed thirty-something people).

Do you believe the things you're saying?

I can only repeat it: Read some accounts of stabbing sprees. They don't get as much publicity as shooting sprees, but they're scary as hell. In most cases, the death count is only low because of incompetence of the attacker.

about two weeks ago
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US School Installs 'Shooter Detection' System

Ihlosi Re:Dumb idea ... Lots of assumptions .... (698 comments)

In scenario 1, man #1 has a gun, how much good will running away do man #2?

Depends on how good a shot the armed guy is, and how far the nearest chance to break line of sight is. (And no, guns, especially handguns, are not death rays). Of course, if the attacker is smart enough to use the advantage of iniative, the victim has no chance.

In scenario 2, man #1 has a knife, how much good will running away do man #2?

He has a 50% chance of being caught and stabbed - if the attacker is dumb enough to show the knife before attacking. Otherwise, the first thing the victim will notice is that he's bleeding like a stuck pig, and then the victim will die.

However, there's one big difference between a shooting spree and a stabbing spree - after the first shot, everyone in the general vicinity will be alerted. With a knife, people often didn't even realize that there was some guy going around stabbing people.

about two weeks ago
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US School Installs 'Shooter Detection' System

Ihlosi Re:According to the police... (698 comments)

(It was followed by âoeMore aggressive institutionalization for mentally ill persons.â)

Brilliant idea. This will scare anyone who suspects that they are mentally ill away from seeking professional treatment.

about two weeks ago
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US School Installs 'Shooter Detection' System

Ihlosi Re:Dumb idea ... Lots of assumptions .... (698 comments)

And I suppose a high calibre machine gun is no more dangerous than a fucking letter opener or cocktail stick?

Depends on who you want to kill. Against unarmed, unaware victms, knives work perfectly fine.

There's a reason we give soldiers rifles instead.

Because they're usually fighting enemies that have rifles, too.

I hope you're not suggesting that the main job of soldiers is murdering unarmed, unprepared kids in schools?

about two weeks ago

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