Just because it's no longer core functionality, there are still apps that provide the feature. They were around before NFC unlock was part of Android, and they're still around now.
It's not like another ecosystem that fights against apps that provide the same functionality as the OS.
Thank you for your armchair commentary of how the department of defense should operate. You must be much better at this than them, after all, your condescension and confidence in your ignorance are right up there.
Patrolling the shoreline for a united nations event?
Two Blackhawks with the 82nd Airborne out of Fort Bragg, North Carolina were in the city on duty for the United Nations General Assembly, WCBS 880’s Alex Silverman reported.
The Army said the choppers were flying low along the east shore of Staten Island when a drone slammed into the side of one of them.
How dare they do their jobs where and when they're supposed to!
You need software access to the registers that control the core voltage regulators. So you first need to gain root access. They changed the DVFS tables to make the soc run outside it's operating areas.
They had to profile the DVFS operating points for the specific device they used to find the right values to used. The profiling causes device reboots or freezes. Not something you can do without being noticed.
Step 1: probe DVFS tables, profile system to find points where it causes bit flips without rebooting or freezing. Step 2: use performance counters to profile the victim code to find exactly when you need to trigger a fault Step 3: load new values to DVFS table Step 4: trigger a spin loop at the precise time in a core that shares the same clock-voltage values as the core the victim thread is running in, causing the system to change to the altered voltage/frequency point. Step 5: profit?
The easiest way to mitigate this is to implement power saving better. Separate all the core frequencies and voltages, like Intel does already. The way it's done in ARM chips seems wasteful to me. why would you raise the frequency and voltage of 4 cores when you're only needing one?
You could also not allow the performance counters to be used to profile code running at a higher privilege level.
Have you wondered why it's always more expense to build a PC these days than buy one? The crapware they load on the pre-loaded Windows OS more than pays for the OS license.
That bundled Windows is actually making your PC cheaper.
Just a month ago the encryption key for the Secure Enclave firmware on the iPhone 5S's was found. While it doesn't mean someone can remote access the data from it, it does mean someone could load their own firmware on to an iPhone 5S's Secure Enclave. It also means the firmware can be analysed for vulnerabilities.
IT may be extremely difficult to get in to it, but I wouldn't go as far as saying its "literally impossible to reverse engineer, due to the high levels of iOS hardware security".
Sure, it's a high level of security, but nothing is perfect.
The pressure difference isn't all that much. atmospheric pressure is around 1kg/cm, most cars run 2kg/cm, so it's 3 times higher inside than out.
No one has any evidence of a tire failing due to oxidization of the inner layer of the tire. Of the billions of tires that have been made, zero is quite a low number. They're designed to be filled with air.
It would cost a tiny bit extra in fuel to maintain the higher pressure. It would require an aircraft design that can handle a constant change of 10psi between sea level airports and cruising altitude, instead of 6000ft aircraft that only need to handle 8psi. 8000ft aircraft only see 7psi difference at 36,000ft
Lower pressure means fewer molecules passing through your nose... but it also means liquids will evaporate faster, leading to more "smells" in the air. At 75kPa water boils at 92 degrees. At 81Kpa (6000ft) it boils at 94 degrees and (obviously) at 101kPa it boils at 100 degrees.
The problem with planes isn't the pressure difference between inside and outside the cabin, it's the constant change in that pressure differential. The changing in pressure causes the metal to expand and contract, leading to cracking over time.
The inside of a hyperloop train would be at the same pressure all the time, so would the inside of the "loop". No changes in pressure means no fatigue.
Every review of that car is pointed out it has terrible, vague steering and aweful body roll Top Gear US gave it 2/10 Auto Express gives it 2/5 The Guardian gave it 3/10 Consumer Reports put it in the 10 worst cars of 2013.
It appears to be a really shit car. Cheap, but shit.
Careful with taking passengers and luggage, the car is only rated to carry 400kg. You're 110kg of that.
3500 "lb" is pretty common for a car these days. If it has 5 seats, decent boot space, air bags, crumple zones, side impact beams, rollover protection, etc. It no longer weighs 1000kg, it's more like 1600kg.
Which in "Land of the pretend units" is about 3500 pounds.
Holy shit, what about all that oxygen on the OUTSIDE of the tire? You know, the side where you can't put any protective coatings on it because it will wear off as the tire wears down?
They fill tires with nitrogen because regular air contains a significant amount of water. Water vapor expands and contracts a lot with temperature. With no water inside the tire, you get more consistent pressure.
Anyone who told you it makes your tires last longer because there is no oxygen was telling you lies so you will spend more money.
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Or you built an app with NFC and Device Administrator permissions, you could make your own NFC unlock app!
Oh wait, the second result on google for "nfc ulock app" is an app in the Play store for unlocking your phone with an NFC tag.
Just because it's no longer core functionality, there are still apps that provide the feature.
They were around before NFC unlock was part of Android, and they're still around now.
It's not like another ecosystem that fights against apps that provide the same functionality as the OS.
A $1,000 smartphone with 0 apps.
Sounds like a luddite phone to me.
Thank you for your armchair commentary of how the department of defense should operate. You must be much better at this than them, after all, your condescension and confidence in your ignorance are right up there.
You mean the UN HQ, right on the edge of the East River? Yeah, how dare they patrol the waters leading to the East River.
According to Google, it's only 15 miles by car. Would be less by water. Staten Island to the UN HQ is less than 10 miles by water.
So they can use their eyes to look at the water they're patrolling?
The National Guard is a branch of the Army and Air Force.
Either way, it's all part of the Department of Defense
The helicopters were patrolling the eastern shoreline of Staten Island, so probably not even over land.
* It's providing security for a United Nations General Assembly
Patrolling the shoreline for a united nations event?
Two Blackhawks with the 82nd Airborne out of Fort Bragg, North Carolina were in the city on duty for the United Nations General Assembly, WCBS 880’s Alex Silverman reported.
The Army said the choppers were flying low along the east shore of Staten Island when a drone slammed into the side of one of them.
How dare they do their jobs where and when they're supposed to!
It's flipping bits by gaining root access, profiling the system, crashing it many times in the process, then mess with something nearby.
You need software access to the registers that control the core voltage regulators.
So you first need to gain root access.
They changed the DVFS tables to make the soc run outside it's operating areas.
They had to profile the DVFS operating points for the specific device they used to find the right values to used. The profiling causes device reboots or freezes. Not something you can do without being noticed.
Step 1: probe DVFS tables, profile system to find points where it causes bit flips without rebooting or freezing.
Step 2: use performance counters to profile the victim code to find exactly when you need to trigger a fault
Step 3: load new values to DVFS table
Step 4: trigger a spin loop at the precise time in a core that shares the same clock-voltage values as the core the victim thread is running in, causing the system to change to the altered voltage/frequency point.
Step 5: profit?
The easiest way to mitigate this is to implement power saving better. Separate all the core frequencies and voltages, like Intel does already. The way it's done in ARM chips seems wasteful to me. why would you raise the frequency and voltage of 4 cores when you're only needing one?
You could also not allow the performance counters to be used to profile code running at a higher privilege level.
Have you wondered why it's always more expense to build a PC these days than buy one?
The crapware they load on the pre-loaded Windows OS more than pays for the OS license.
That bundled Windows is actually making your PC cheaper.
Just a month ago the encryption key for the Secure Enclave firmware on the iPhone 5S's was found.
While it doesn't mean someone can remote access the data from it, it does mean someone could load their own firmware on to an iPhone 5S's Secure Enclave. It also means the firmware can be analysed for vulnerabilities.
IT may be extremely difficult to get in to it, but I wouldn't go as far as saying its "literally impossible to reverse engineer, due to the high levels of iOS hardware security".
Sure, it's a high level of security, but nothing is perfect.
Caffeine is also a toxin produced by plants to kill insects.
What's it got to do with aircraft?
The pressure difference isn't all that much. atmospheric pressure is around 1kg/cm, most cars run 2kg/cm, so it's 3 times higher inside than out.
No one has any evidence of a tire failing due to oxidization of the inner layer of the tire. Of the billions of tires that have been made, zero is quite a low number. They're designed to be filled with air.
I think driving would be much safer if every driver required the same level of training as aircraft pilots.
It would cost a tiny bit extra in fuel to maintain the higher pressure.
It would require an aircraft design that can handle a constant change of 10psi between sea level airports and cruising altitude, instead of 6000ft aircraft that only need to handle 8psi. 8000ft aircraft only see 7psi difference at 36,000ft
Lower pressure means fewer molecules passing through your nose... but it also means liquids will evaporate faster, leading to more "smells" in the air.
At 75kPa water boils at 92 degrees.
At 81Kpa (6000ft) it boils at 94 degrees
and (obviously) at 101kPa it boils at 100 degrees.
You do in New Zealand.
Last time I flew I got breakfast and coffee. It was only a 40 minute flight too.
The problem with planes isn't the pressure difference between inside and outside the cabin, it's the constant change in that pressure differential. The changing in pressure causes the metal to expand and contract, leading to cracking over time.
The inside of a hyperloop train would be at the same pressure all the time, so would the inside of the "loop". No changes in pressure means no fatigue.
Every review of that car is pointed out it has terrible, vague steering and aweful body roll
Top Gear US gave it 2/10
Auto Express gives it 2/5
The Guardian gave it 3/10
Consumer Reports put it in the 10 worst cars of 2013.
It appears to be a really shit car. Cheap, but shit.
Careful with taking passengers and luggage, the car is only rated to carry 400kg. You're 110kg of that.
You can't drive a dry sedan, you need to moisten them with water and hydrocarbons first.
3500 "lb" is pretty common for a car these days.
If it has 5 seats, decent boot space, air bags, crumple zones, side impact beams, rollover protection, etc. It no longer weighs 1000kg, it's more like 1600kg.
Which in "Land of the pretend units" is about 3500 pounds.
Holy shit, what about all that oxygen on the OUTSIDE of the tire? You know, the side where you can't put any protective coatings on it because it will wear off as the tire wears down?
They fill tires with nitrogen because regular air contains a significant amount of water. Water vapor expands and contracts a lot with temperature.
With no water inside the tire, you get more consistent pressure.
Anyone who told you it makes your tires last longer because there is no oxygen was telling you lies so you will spend more money.