iPhone and Error 53

14 02 2016

or

How to increase sales.

or

Designed by Apple in California.

There is so much misinformation about the fact that an iPhone can be bricked after replacing the Touch ID sensor by an unauthorized repair shop.

So here are the facts …

The API hides a lot of the implementation details, so most developers won’t know how it really works but Apple documents it in their iOS Security Guide (link below).

When you boot your iPhone up, the filesystem is encrypted. It’s just full of meaningless junk; you can’t use the phone. Once you enter your passcode for the first time, the system reads the filesystem key (which itself is stored encrypted by your passcode), and tries to decrypt it. If your passcode is correct, it will end up with the correct filesystem key, and it can unlock your iPhone’s hard drive and read useful data from it. This filesystem key is called NSFileProtectionComplete.

The class key is protected with a key derived from the user passcode and the device UID.
… when a passcode is entered, the NSFileProtectionComplete key is loaded from the system keybag and unwrapped.


IMPORTANT …

At this point your phone is unlocked. That is all there is to it. This filesystem key gets placed in the Secure Enclave so your iPhone can read/write from its hard drive. We haven’t used TouchID or fingerprints so far, just a passcode. This is why you always need to give your passcode after a restart.

So how does Touch ID work, exactly?

Let’s look at what happens when you lock the phone, and how it’s different between TouchID and non-TouchID:

If Touch ID is turned off, when a device locks, the keys for Data Protection class Complete, which are held in the Secure Enclave, are discarded. The files and keychain items in that class are inaccessible until the user unlocks the device by entering his or her passcode. With Touch ID turned on, the keys are not discarded when the device locks; instead, they’re wrapped with a key that is given to the Touch ID subsystem inside the Secure Enclave. When a user attempts to unlock the device, if Touch ID recognizes the user’s fingerprint, it provides the key for unwrapping the Data Protection keys, and the device is unlocked.

So basically if you have TouchID disabled (passcode only), this key gets thrown away and you need to enter the passcode again next time you unlock. It’s the exact same process as you go through on first-boot.
What Apple is saying here is that TouchID just holds on to the key which you already obtained via your passcode for a while (48 hours if the device stays on). But is TouchID really completely optional? Let’s ask Apple:

When Touch ID scans and recognizes an enrolled fingerprint, the device unlocks without asking for the device passcode. The passcode can always be used instead of Touch ID.

What about other stuff like iTunes purchases? How does that work with Touch ID?

Touch ID can also be configured to approve purchases from the iTunes Store, the App Store, and the iBooks Store, so users don’t have to enter an Apple ID password. When they choose to authorize a purchase, authentication tokens are exchanged between the device and the store. The token and cryptographic nonce are held in the Secure Enclave. The nonce is signed with a Secure Enclave key shared by all devices and the iTunes Store.

So when you enter your iTunes Store password the first time after a reboot, your device gets a temporary token to use for purchases, stores it in the Secure Enclave, and guards it behind TouchID. Again, it’s totally optional; just a shortcut for entering your password.

The same applies to Apple Pay:

The Secure Element will only allow a payment to be made after it receives authorization from the Secure Enclave, confirming the user has authenticated with Touch ID or the device passcode. Touch ID is the default method if available but the passcode can be used at any time instead of Touch ID. A passcode is automatically offered after three unsuccessful attempts to match a fingerprint and after five unsuccessful attempts, the passcode is required. A passcode is also required when Touch ID is not configured or not enabled for Apple Pay.

Man, Apple is really going to regret writing this document…

CONCLUSION …

  • It is totally technically possible to rip the Touch ID sensor out of your phone and still be able to unlock it (assuming you have the passcode).
  • Touch ID does not seem to be essential for any single feature of the device; it is just a shortcut for entering the passwords you already entered.
  • It’s really weird that Apple only checks the Touch ID sensor’s integrity when they update the OS. Shouldn’t iOS check that on every boot?

So what did Apple do wrong?

  1. Apple should have communicated better (not when performing the update, but when buying the device!) that the Touch ID sensor can only be replaced by an authorised technician.
  2. If the Touch ID sensor is compromised, iOS should exclusively use the passcode instead.

The passcode is the only thing you really need to unlock the device. Apple should admit that they chose to the wrong option. Looking forward to a legitimate lawsuit or an updated version of iOS.

I always thought that the hardest thing in the world to understand is the income tax, but now we have Error 53, designed by Apple in California.

Related …

iOS Security Guide

Fingerprint Technology

Credit to springsup on MacRumors

Thanks for dropping by.





Lipophobic iPhone

17 01 2016

Apple, please do not focus on making an iPhone thinner and thinner. There is a more important area in which developers can show us their innovative ideas.

Touch screens like to forward our commands to the operating system but sadly they also like to get dirty.

I hate this kind of oily coating compromising your identity with every tap and swipe and coming back in a jiffy after an intense cleaning procedure.

20140806-203544-74144071.jpg

That’s why Apple adds a lipophobic coating to the touch screens of iPhones since the 3GS launched in 2009 and their iPads, to repel fingerprint oil. It aids in preventing and cleaning fingerprint marks. Most “oleophobic” coatings used on mobile devices are fluoropolymer-based solids (similar to Teflon which usage is well-known for pans) and are both lipophobic and hydrophobic.

See applications of oleophobic coating in this video

or this video about super hydrophobic surfaces the Slo Mo Guys made at GE

Apple’s patent …

In 2011 Apple filed a patent application to apply an oleophobic coating to the surface of a material and to improve its effectiveness. In particular, this is directed to using a direct liquid application in a Physical Vapor Deposition (“PVD”) chamber to apply the coating to the material.

Apple states that as the user touches the surface of a device such as an iOS device, oils and other particles from the user’s fingers could be deposited on the surface. This may adversely affect the appearance of the surface, especially if information is being displayed. One way to limit the amount of oils and particles deposited on the surface of portable devices is to apply an oleophobic treatment to the surface. However, this approach could be difficult to accomplish.

Apple states that to prevent the deposition of oils on an electronic device surface, an oleophobic ingredient could be bonded to the electronic device surface. The oleophobic ingredient could be provided as part of a raw liquid material in one or more concentrations. To avoid adverse reactions due to exposure to air, heat, or humidity, the raw liquid material can be placed in a bottle purged with an inert gas during the manufacturing process.

20140806-203728-74248778.jpg

The bottle could be placed in a liquid supply system having a mechanism for controlling the amount of raw liquid material that passes through the liquid supply system. Upon reaching the vaporizing unit, the liquid could be vaporized and the oleophobic ingredient within the liquid can then be deposited on the electronic device component surface. As the liquid supply is drained from the bottle, additional inert gas is supplied in its place to further prevent contamination.

The reality …

I purchased my iPhone 4S in November 2011. iPhones’ touch screens are made of a highly resistant material, Gorilla Glass, which lets the device look beautiful even after heavy usage over years.

Gorilla Glass is the registered trademark for an alkali-aluminosilicate sheet toughened glass manufactured by U.S. glassmaker Corning Inc. Engineered for a combination of thinness, lightness, and damage-resistance, it is used primarily as the cover glass for portable electronic devices including mobile phones, portable media players, laptop computer displays, and some television screens. It is manufactured through immersion in a molten alkaline salt bath using ion exchange to produce compressive residual stress at the surface. This prevents cracks from propagating – for a crack to start, it will first have to overcome this compressive stress.
(Source Wikipedia)

I don’t really understand the discussion about Sapphire Glass for touch screens because Gorilla Glass does it all for the majority of users. If the device hits the ground in an adverse angle Sapphire Glass doesn’t prevent the touch screen to get damaged.

A really innovative feature would be an oleophobic coating which upholds its properties for a much longer time than the actual coating.

My experiences with an iPhone 3GS, a 4S, and a 6 Plus showed that the effectiveness of the coating decreases dramatically after about a year of intense usage. It’s increasingly difficult to clean the screen and you need a very, very clean cloth to get rid of the biological evaporations. It’s like a vicious circle, to clean the screen you press harder and harder and as a result the coating becomes thinner and thinner.

Here is what Apple published about cleaning the touch screen …

Clean iPhone immediately if it comes into contact with contaminants that may cause stains, such as ink, dyes, makeup, dirt, food, oils, and lotions. To clean iPhone, unplug all cables and turn it off. Use a soft, slightly damp, lint-free cloth. Avoid getting moisture in openings. Don’t use window cleaners, household cleaners, aerosol sprays, solvents, ammonia, or abrasives to clean iPhone. The front glass surfaces have an oleophobic coating. To remove fingerprints, wipe these surfaces with a soft, lint-free cloth. The ability of this coating to repel oil will diminish over time with normal use, and rubbing the screen with an abrasive material will further diminish its effect and may scratch the glass.

To clean the Home button (allowing Touch ID to work optimally), wipe it with a soft lint-free cloth.

I thought about a replacement of my 4S’ screen but after reading this on iFixit I immediately cancelled my ambitious project:

iPhone 4S Display Assembly Replacement
Author: Walter Galan
Time required: 1 hour
Difficulty: Difficult

If you let a specialized company replace the touch screen it costs between €70 and €100 in Germany which is equivalent to $90-$130.

But there is an alternative. iFixit explains the technique of “How to apply anti-fingerprint oleophobic coating” on its website.

20140806-203816-74296761.jpg

This is an easy and cheap way to refurbish an iOS device. But don’t ask me whether it works or not. I didn’t try it out because the original process is much more complicated and don’t believe that this simplified method fulfills my personal quality requirements.

Climate conditions …

Clammy fingers are like brakes when using gestures like drag, flick or pinch. This is what I painfully recognized when visiting Thailand, my second residence, shortly after purchasing my iPhone 4S in 2011. Although the oleophobic coating was straight from the factory it hampered the usage by a ฝรั่ง (phonetic spelling: FARANG, that’s the term Thai people use for foreigners) drastically. Subtropical countries are hostile environments for touch screens of Apple’s mobile devices.

Because even Apple cannot redesign the way our body works I personally need an innovative feature implemented in an iPhone, which works like a wiper, a sweat-sensing wiper.

Summary …

I would like to see an innovative approach to the problem of cleaning touch screens but I don’t think that we will see a perfect solution because this feature is not promotionally effective.

Related links …

Apple: How to clean Apple products

iFixit: iPhone Display Replacement

Apple Patent: Direct Liquid Vaporization For Oleophobic Coatings

Thanks for visiting iNotes4You.
Before you leave please remove your fingerprints from my website.





iPhone 6S/6S Plus

15 09 2015

Welcome to the iOS family.

See this concept map (created with the app INSPIRATION on an iPad) which shows all iOS versions in relation to all iPhone models on which they can be installed. 

  
It started with compatibility to 2 models. Since iOS 6 the installation on the actual model and 3 predecessors is supported. With iOS 7 and 8 Apple’s mobile OS is ready to install on 5 models. iOS 9 now supports 6 iPhone iterations and these iPad models: Mini, Mini 2, Mini 3, 2, 3, 4, Air, Sir 2, Pro

Some people argue that less fragmentation isn’t as important as Apple officials tell us on the company’s yearly events. Well, stats about iPhone device share (Localytica, 2014) tell us that usually more than 60% of iOS users are on older devices (with a higher percentage for the iPad) but like to benefit from improved OS versions. This is proofed by extremely high adoption rates (>80%).

Alan Kay is one of the key people who have shaped the way we are using computers today. He can be seen as the key scientist behind the graphical user interface and the object-oriented programming. Regarding Apple’s success the most important thing Steve Jobs overtook from Alan Kay was the belief that

“People who are really serious about software should make their own hardware.”


Jobs made it to one of the core principles of Apple.

Less fragmentation is just one of the benefits Apple brings to its customers and it’s possible because they build both, hardware and software. Customers love the durability of their iPhones giving them an extraordinary resale value. Beside customers thousands of happy developers can see their apps running on old iPhone young timers, a not to be underestimated economic factor.
Of course not all features of updated operating systems are available for older devices. 3D-Touch for example needs a new touch screen technology. 
Anyway …

“There is a huge difference between market share of units and usage share. We’re about selling the best and having the best experience and having the happiest customers. Happy generally means using more.”

(Tim Cook)

Start being creative …

Read about 

The app Inspiration

if you are interested in creating awesome infographics.

Thanks for paying attention.

 





Imagination and Reality

9 09 2015

Many workout apps for iOS are too narrow in focus and omit important guidelines recommended by the American College of Sports Medicine, according to a recent study.

Here is the imagination

and you’ll find the reality in the research study below.

 

My suggestion …

Do not delegate your way of life to any mobile device. Just keep your brain running.

 

Related …

Fitness apps ignore guidelines

Cockamamie


Stay healthy.
Physically, socially, and financially.





Ready for September 9, 2015?

7 09 2015

200 million waiting in the wings?

Nearly nothing comes out of the box. So innovation is always combined with the ability to connect the dots in a way that people are excited, benefit from a new technology, let them change the way to do things more efficiently or even with more fun and engagement, and inspire them to think different and force creativity.

Apple, aka The iPhone Company, is focused on a few products with the highest possible build quality. All their products simply do what they are intended for without bells and whistles. Each new product iteration brings remarkable value.

Glass! Handle with care!

My iPhone 4S is now 4 years old and I’m excited to install iOS 9 on this youngtimer not suffering from any circulatory problems. But oleophobic coating has gone and it’s a soul-destroying task to keep the vista. Anyway it’s still an eyecatcher, the most amazing iPhone yet (Apple’s slogan for the 4S) and doesn’t have these ugly inlaid work on the backside. I’m 60+ and sadly Apple still didn’t invent an age sensor which automatically upgrades the screen size to users in their declining years.

But there are many fans out there who think differently.

The typical mobile phone user upgrades every 18-24 months (depending on contract and country). Here is what you should know when saying Goodbye to your actual companion and Hello to Apple’s new product iteration.

Saying Goodbye



Now it’s your turn, Tim.





9:41 am

4 09 2015

9:41 am, January 9, 2007

This was an announcement which started to change lives of many people all over the world. Today smartphones are indispensable e.g. for all the refugees to find their way from Africa to Europe. We learn that social media and mobile devices entail risks but also life and hope.


Enjoy Steve Jobs initiation of the ultimate mobile device.

9:41am

This is a day I’ve been looking forward to for two and a half years.

Every once in a while a revolutionary product comes along that changes everything. One is very fortunate if you get to work on just one of these in your career. Apple has been very fortunate that it’s been able to introduce a few of these into the world. In 1984 we introduced the Macintosh. It didn’t just change Apple, it changed the whole industry. In 2001 we introduced the first iPod, and it didn’t just change the way we all listened to music, it changed the entire music industry.

9:42 am

today, we’re introducing THREE revolutionary new products. The first one is a widescreen ipod with touch controls” The crowd goes wild. “The second is a revolutionary new mobile phone.

9:43am

And the third is a breakthrough internet communications device.

An iPod, a phone, an internet mobile communicator.
An iPod, a phone, an internet mobile communicator …
these are NOT three separate devices!
And we are calling it iPhone!

Notes

  • Thankfully we have manufacturers (predominantly Asian companies) whose devices are affordable for the poor.
  • Europe, help the poor and weak people from Syria and other African countries. You cannot close your eyes any longer.

Btw, enjoy the Apple event on Sep 9, 2015. Secrecy has gone, but excitement is still there.

Thanks for dropping by.





Switch Points of Power

30 07 2015

Even if your mobile device already took control over you, there are some ways out of possible dilemmas and it’s not necessary to make extensive use of your brain. Just look at my collage to see what can be done.

  

The worst case for a mobileholic is malfunctioning of her/his beloved companion (stats say that ‘his’ is more likely than ‘her’). A common problem is mismanagement of the device’s memory.

Think of it like this:

You want to send money to an account and already looked up the account number. Somebody asks you ‘What time do we have our appointment with Mr. Smith?’. After answering, your short-term memory containing the account number is deleted or the account number you are sure it’s right now contains transposed digits.

You have to reboot and load your memory with the account number. If you don’t look up the account number again your money transfer might fail.

Regarding your device an app may execute an unwanted operation which might freeze it e.g. by running into an endless loop. You tap on a control but the app doesn’t react or delivers wrong information to the brain of your device, the processor in cooperation with the memory.
A REBOOT removes any not-wanted elements associated with apps or the operating system in the device’s memory and trimming it down to the core elements.

Related …

Troubleshooting

Saying Goodbye

Note
If you are already on a 6 or 6 Plus, the Sleep/Wake button got a new home on the side of the device to put it comfortably within reach.

Thanks for dropping by.








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