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Comment: Re:So everything is protected by a 4 digit passcod (Score 1) 504

by willy_me (#47938961) Attached to: Apple Will No Longer Unlock Most iPhones, iPads For Police
The fingerprint is embedded within the SOC and not accessible from any API - a write only part of the device. It will accept new fingerprints and perform comparisons but never reveal any currently stored fingerprints. This is a dedicated piece of hardware and short of dissolving the package away to access the storage directly, there is no way to recover a fingerprint. Without the fingerprint, the encryption key associated with that fingerprint will never be released. One assumes the encryption key was randomly generated and of sufficient length so that it provides maximum security for whatever encryption algorithm was used to secure the device.

Comment: Re:Definition of a successful intercept... (Score 4, Insightful) 454

by willy_me (#47505669) Attached to: MIT's Ted Postol Presents More Evidence On Iron Dome Failures

It would be cool to find out just what the real statistics are. I'm pretty sure, though, that Israel classifies this information as a state secret and we may never know in our lifetimes.

The rockets generate more psychological damage then physical. As far as weapons go, they are rather pathetic. All the iron dome really has to do is to make those it protects feel safe. If statistics have the potential of damaging this feeling of safety then you ca be assured that they will be kept secret.

The other purpose of the iron dome is to limit the desire to fire the rockets in the first place. If one thinks their efforts are in vain then they are less likely to follow through. If Israel can convince members of Hamas that their rockets are not working then there will be fewer rockets launched at Israel.

Comment: Re:Moore's Law (Score 2) 143

by willy_me (#47297499) Attached to: Researchers Unveil Experimental 36-Core Chip

And hopefully in any lectures on Moore's Law, the students learn that Moore's Law refers to transistors on a die, not the speed of the chips. This 36-core chip probably jumps ahead of Moore's Law a bit, as it's got to be a fairly large die.

Moore's Law refers to the number of components per integrated circuit for minimum cost. Note that this is basically transistor density and is not impacted by core size. Silicon defects and transistor size determine the optimal number of components per IC.

A quote from Wikipedia,

Moore himself wrote only about the density of components, "a component being a transistor, resistor, diode or capacitor,"[26] at minimum cost.

Comment: Re:Nyquist (Score 1) 116

by willy_me (#47139757) Attached to: Huawei Successfully Tests New 802.11ax WiFi Standard At 10.53Gbps

With MIMO you have multiple channels

I was under the impression that MIMO gives you multiple antenna to facilitate beam forming. Channel bandwidth requirements do not change nor does the number of channels required. MIMO still only requires 1 channel. A quick wiki search appears to agree with this impression.

Now you can also use multiple channels but this is independent of MIMO technology. Both techniques can be used together - and typically are which might explain the confusion. Either that or I am confused which is always a possibility....

Comment: Re:When did they add DMA? (Score 1) 355

by willy_me (#46997317) Attached to: Can Thunderbolt Survive USB SuperSpeed+?

Don't see much need for high power output when Thunderbolt devices like displays will probably need their own power supply anyway.

It's not high power output - it's high power transfer. It will be used as single connection display / ethernet / webcam / USB Audio / power adapter when connecting your laptop to a monitor. Sort of like the ultimate dock.

Comment: Re:They are orthogonal use cases (Score 1) 355

by willy_me (#46996461) Attached to: Can Thunderbolt Survive USB SuperSpeed+?

I built a FreeBSD 9.1 file server using usb 3 / usb 3 docks, but I failed them all back down to using their 2.0 interface due to persistent flakiness/dropping off the bus type issues.

If you look at MacZFS you will notice that ZFS over a USB bus is garbage. Far too many problems - developer says to not even bother reporting the bugs. And in my experience, FreeBSD is not much different in this regard. Had major problems with ZFS over USB while UFS appears to work fine. Use a different connection, like eSATA or Firewire, and ZFS starts to work again.

I only mention this because it is quite possible that USB was working fine. Glitches / delays / disconnects, regardless of which layer they originate in, appear to hit ZFS hard. Better to use eSATA if you have a FreeBSD box.

Comment: Re:Frequent hurricanes? (Score 0) 627

by willy_me (#46933609) Attached to: US Climate Report Says Global Warming Impact Already Severe
The graph has a logarithmic horizontal scale. As a result, the deviation of sea level from thousands of years ago is calculated over a larger time from then the deviation reported for today. If the deviation for today was calculated using the same time frame it would be significantly larger then the value calculated for thousands of years ago. The fact you did not see this is somewhat disturbing and could just explain why you are arguing your point. Or you're a troll - you're probably just a troll - people on this site can not be that foolish.

Comment: Re:Efficiency? (Score 2) 234

by willy_me (#46885463) Attached to: Toyota Describes Combustion Engine That Generates Electricity Directly

The real question is how efficient is it?

It does not have to be any more efficient if they manage to reduct weight and increase reliability. Efficiency has a big part to play but even a less efficient engine would be desirable if they improve greatly on other aspects.

Remember that this is being targeted for vehicles that will run mostly on electric power. An ICE is a dead weight when not being used. If someone drives using 90% pure electric then the efficiency gains of carrying less weight could easily outweigh the losses of an ICE that was 5% less efficient but only operates for 10% of the time.

Comment: Re:What size does one take? (Score 1) 193

by willy_me (#46801417) Attached to: Why Tesla Really Needs a Gigafactory
That was the original plan - 18650 batteries give you the most capacity for the smallest price. But once you start producing thousands of cars things change a little. It would now seem prudent for them to design their own. This would give them more efficient use of space and would make it easier to adopt new upcoming technologies. The economies of scale with respect to 18650 batteries will no longer apply.

Comment: Re:HP Calculators (Score 1) 702

by willy_me (#46793165) Attached to: Ask Slashdot: What Tech Products Were Built To Last?
An amendment. Forget USB - add inductive charging. Now you do not require any physical ports. The keyboard membrane should be designed so that it also provides a watertight seal between the keyboard and the electronics. Now you have a calculator you can use in the rain, on a ship, or anywhere else you do not want to use a cell phone. Engineers can use it in the field - without taking off any gloves.

Comment: Re:HP Calculators (Score 1) 702

by willy_me (#46793127) Attached to: Ask Slashdot: What Tech Products Were Built To Last?

Someone needs to start a Kickstarter project to create a decent calculator. A solid case and keyboard as per the older HP calculators. Color display - they're common enough. Embedded ARM CPU as you would expect in a cell phone. And similar to a cell phone, a rechargable battery. Add in bluetooth, WiFi, and USB for communication and your hardware is done.

The interesting part would be on the software end. One could attempt to emulate an HP calculator - but a standard Forth VM would also be interesting. Synchronizing with a PC is a huge area where things could be improved. It would be great to share a workspace with a computer so that once you solve a problem on the calculator - the requred functions would be available on the PC allowing you to automaticaly integrate the solution into your own code / spreadsheet / etc.

An open calculator design would open up lots of possibilities. Cell phones are great start but regardless of how impressive the software is, it still lacks a physical keyboard. Automatic type correction works great for text - not so much for calculators.

"Consistency requires you to be as ignorant today as you were a year ago." -- Bernard Berenson