Forgot your password?

Comment: Face recognition in cleanroom? Really? (Score 1) 125

by Neil Boekend (#48472967) Attached to: Ask Slashdot: Best Biometric Authentication System?

In all the cleanrooms I have been in face masks have been required. Human breath has a lot of water droplets in it.
How are you going to get a face recognition off someone in clothes like this?
The employees are not allowed to take off their face mask for a scan. Suggesting it would get you laughed at and fired at the places where I worked.

Just use RFID scanners with the access badges they already have or with RFID bracelets like mentioned in other posts. For additional security: have a guard at the door. Once an employee checks in have him verify that it's the right person with a picture on his screen.
Or facial recognition there. Before the face mask goes on.

Comment: Re:How about transfer rate and reliability? (Score 2) 179

by Neil Boekend (#48472835) Attached to: Consortium Roadmap Shows 100TB Hard Drives Possible By 2025

That doesn't work linearly. It's the square root of 10: 3.16

Ten times the density means 3.16 times the amount of tracks beside each other and 3.16 times the amount of bits per track.
If the head still reads only one track that means the amount of bits it can read in a given time is 3.16 times as high.
Not 10.

Comment: Re:Constant writes such as backups, security camer (Score 1) 427

by Neil Boekend (#48465111) Attached to: How Intel and Micron May Finally Kill the Hard Disk Drive

Why use unreliable 15k drives for backups when you can just use 7k2 dives for the same price and sequential speed but far more room?
Sequential speed is not just spindle speed, it's also a result of density. Sequential speed increases with the square root of the density increase. A 2x as big disc with the same spindle speed will be 1.4 times as fast sequentially. A 4x as big disc will have twice the sequential speed.

Thus a 4x as big 7k2 disk will have almost the same sequential speed as a 15k drive, but with 4 times the room. Of course you should still stick them in a suitable RAID.

Comment: Re:Where do you fill up? (Score 1) 281

With CNG I can fill up at home. It'd be like installing a high current plug except I'd pipe NG to a compressor and let it fill up my car.

Here in the Netherlands some cars drive on LPG (Liqified Propane Gas). It is easy to do in a petrol car.
The gas mains to the houses provides a mixture with mainly methane. You wouldn't be able to run the same car on that.
Both gasses are "natural gas"

Comment: Re:Remastered? (Score 1) 38

But it was staged! The stage was in the World Trade Center and 9/11 was a coverup to hide it! They used a timetraveling UFO from Area 51 to bring the footage back to 1969. It was all thought up by the Illuminati to prevent us from seeing that the lizards have taken over our government!

Comment: Re:Seemed like a good idea at the time (Score 1) 219

by Neil Boekend (#48432607) Attached to: Lessons Learned From Google's Green Energy Bust

For cars the environmental effects were also an order of magnitude lower than the alternative: horses.
Cities had trouble getting rid of all the dung from the horses by the time cars came around. Cars didn't smell as much and the exhaust simply flew away instead of staying in the middle of the road.

Comment: Re:Yet (Score 1) 219

by Neil Boekend (#48432525) Attached to: Lessons Learned From Google's Green Energy Bust

'Round here we have a 2 tier system for a lot of houses. Day power and night power. Night power is cheaper because then the high power users (industry mostly) are down. People who have it wash at night because that is cheaper.
Once the amount of solar energy on the net becomes a problem the power companies will change this, the night becomes more expensive. Then many people with 2 tier systems will change their habits to wash during the day because that is cheaper.

Ergo here in the Netherlands the problem will be delayed automatically. Maybe enough to have grid scale storage.

In every non-trivial program there is at least one bug.