Touch ID is a fingerprint scanner that was developed by Apple and is used on the company's smartphones and tablets, including: iPhone 5, iPhone 6, iPhone 6s, iPhone 7, iPhone 7 Plus, iPad Air 2, iPad mini 4, etc.
Why is it needed? Mainly Touch ID is used to unlock a smartphone or tablet. If previously you used a password and PIN to unlock, now you just need to put your finger on the fingerprint scanner to do this, as shown in the image below:
However, Touch ID is required for other purposes as well. For example, you can use it to pay for purchases, including from a regular store, thanks to the Apple Pay payment system. The bottom line is this: you bind a bank card (or several) to your iPhone, come to the store, select the product, when paying at the checkout, take out your smartphone, bring it to the payment terminal and put your finger on the fingerprint scanner, after which the goods are paid for. It is even more convenient than using a physical bank card - payment takes place instantly. True, so far not all stores support Apple Pay, as well as banks with which the system works, but in the future everything will change for the better.
What does Touch ID look like?
It's easy to guess that Touch ID is integrated into the Home button, which, by the way, since the iPhone 7, is not physical, but has become a touchscreen.
Touch ID security
The built-in sensor scans the pad of the finger using a special resolution and recognizes the pattern of the finger, even if it is at different angles. The image of the fingerprint is located in a special zone of the processor, which is protected. And, interestingly, this is not an image of the fingerprint itself, but its mathematical image, from which, according to Apple, the fingerprint itself cannot be restored.
It is also argued that each individual Touch ID scanner is tied to a separate processor, that is, if the fingerprint scanner is moved from one iPhone to another, it will lose functionality.
Rumors appear on the network that fingerprints are not only stored on the device, but also transmitted to a separate server. Of course, Apple does not confirm such rumors, and there was no evidence of this.
About the global benefits of Touch ID
Those users who follow the release of new mobile devices probably know that many companies are not averse to borrowing ideas from the same Apple. Touch ID is no exception.
The very idea of using a fingerprint scanner on a smartphone is not new, but it was with the advent of Touch ID that scanners became widespread. If before we saw them only on flagship smartphones, today scanners are used even on budget devices!
Here is an example of a device, the cost of which at the time of this writing is only 5-7 thousand rubles, and it is already equipped with a fingerprint scanner. True, this smartphone has a scanner on the back of the case:
The smartphone is called DOOGEE X5 Max.
With the release of the iPhone 5s, Apple developers have introduced a new Touch Id feature - a fingerprint reader. With its help, users of apple gadgets can easily make purchases in the App Store, unlock the phone, etc. Very often on the forums you can find threads about a broken Touch Id.
In this article we will try to figure out why Touch ID does not work on iPhone 5s / 6 / 6s and how to fix it?
To begin with, it should be noted that if the device became buggy after a recent update, it is most likely that you will have to roll back the system and return to the previous version of iOS.
If this method did not help you, you should resort to the following options for fixing Touch ID.
Touch ID stopped working on iPhone 6 / 6s / 5 / 5s
Touch Id mechanical repair - last resort
What to do if Touch Id doesn't respond to any actions? In this case, if Touch ID fails as a result of a software failure, a hard reboot of the system should help. To do this, hold down the Home and Power keys and hold until the device reboots.
If the problem was programmatic, a restart will fix the problem. If the phone was physically affected, you will have to contact the service center, where a qualified technician can diagnose and, if necessary, fix the problem.
Touch ID does not work on iPhone 6 - repair on your own
If there are minor interruptions in the operation of the Touch Id device periodically, Apple developers advise to reconfigure, in other words, to make a new fingerprint and get rid of the old fingerprint.
It is advised to do this periodically so that the fingerprint data in the device is fresh. human skin on the hands is constantly exposed to various factors, and therefore the print may slightly change.
In order to make a new fingerprint, you need to go to "Settings", then select "Touch Id and password". Delete old prints. After that, click "Add a fingerprint" and perform the necessary actions in accordance with the instructions.
Touch ID stopped working in the App Store on iPhone 5s / 6 / 6s / 5
Basically, the reason for this problem is also slightly modified fingerprints, as a result of which the system cannot recognize them, however, sometimes there are cases when the problem lies in incorrectly installed software.
The forums also complain about crashing when the App Store doesn't see Touch Id. How do you fix this?
- Go to the Gadget Settings and look for "Touch Id and Password";
- Find the section "Using Touch Id" and disable "App Store, iTunes Store";
- We reboot the iOS device;
- Go back to the Touch Id settings and turn on "App Store, iTunes Store".
After these steps, there should be no problem.
IPhone 6 problems. Touch ID does not work in winter, in cold weather
There are many complaints about the poor performance of the Touch Id during the cold season. It is very simple to explain the cause of this problem - as a result of the cold, our fingerprint is slightly modified, which is why the system cannot recognize it.
In solving this problem, you will be helped by frequent updating of the fingerprint or creating a "cold" fingerprint. Scan your fingerprint in the cold. However, it is believed that these methods only partially help, however, if there is an urgent need for this function in the cold, it is worth trying.
Touch Id does not work on iPhone 6 / 6s / 5s / 5 due to exposure to water and dirt
After the iOS system update (usually updates to versions 10 / 10.1 / 10.2 / 10.3.2), the user's iPhone may start displaying the message "Failed to activate Touch ID on this iPhone" upon reboot. Access to the user's Touch ID is blocked, and various "dancing with a tambourine" aimed at correcting the situation are usually ineffective. In this article I will tell you what this error "Failed to activate Touch ID on this iPhone" on 5s and 6 is, and how you can fix it.
Error text "Failed to activate Touch ID on this iPhone"
Causes of Touch ID Error on iPhone
This problem is international in nature and is faced by many users around the world. Apple forums are full of complaints from Apple owners about a problem with activating Touch ID, which usually appears after installing system updates 10 / 10.1 / 10.2 / 10.3.2 on the iPhone.
Apple's classic advice on how to fix the "Failed to activate Touch ID on this iPhone" problem is outlined in the next section. In the meantime, I note that, judging by the reviews of experts, the problem is no longer of a software, but of a hardware nature. And, in most cases, it turns out to be difficult to solve it using software tools (although there are pleasant exceptions to the rules). If yours needs to correct the situation and this article will help you with this link.
How to fix "Failed to activate Touch ID on this iPhone" problem
To get rid of the unsuccessful activation of Touch ID, I recommend doing the following:
Conclusion
According to experts, the problem "Failed to activate Touch ID on this iPhone" is of a hardware nature, and it will be difficult to solve it using software methods. In some cases, installing the iOS version 10.3.3 update helps, as well as other methods I listed above. As a last resort, I recommend contacting Apple technical support with your problem - they may provide an effective solution to it.
In all current iPhone models, you can find such a function as Touch ID. Many do not use it and do not even know what it is at all.
Therefore, today I will tell you why you need to use Touch ID on your iPhone and what it gives in general. The article will be very short, but interesting.
Touch ID on iPhone
I would like to start the history of this function with the fact that it appeared back in 2013 along with the legendary iPhone 5S. Then the letter S stood for "Security", which was implemented using touch ID.
How many memes then went that now iPhones will steal with your fingers. However, many years later, everyone adores him.
Touch ID Is a fingerprint scanner in Apple devices that is built right into the Home button. With it, most often you can unlock your smartphone or make purchases.
In the first models, the technology was damp and broke quite often. And the big minus is that it is not so easy to change it, because the button is tied to the device's processor.
Of the global advantages of using, you can name the following advantages:
- the security of your data after losing your device;
- quick unlocking of the device;
- it is convenient to shop at any store.
Today we have this technology in version 2.0 and many cannot even imagine their life without it. After all, it is so convenient and quick to unlock your gadget.
How to set up Touch ID on iPhone 5S, 6, 6S, 6 PLUS, 6S PLUS, SE, 7, 7 PLUS?
Many people think that setting up Touch ID on an iPhone or iPad is super difficult. But you should not be afraid of this and now we will consider the whole process as a whole. 
To begin with, even if you have an old iPhone 5S, it also makes sense to do this procedure on it. Therefore, let's get started:
- go to Settings — Touch ID and Passcode;
- see Add fingerprint and bring the desired finger to the Home button;
- when the scan is completed, then we do the same procedure, only with the edges.
Now the fingerprint has been added and you can add as many fingers as you like. More often than not, three is enough. After all, you can cut yourself and so on, but do not forget that there is a password.
In the same menu of this function, you can choose what exactly you want to use this functionality for. There are actually only two options:
- Unlock iPhone;
- iTunes Store and App Store.
This is purely your preferences. If the first item should be the default, then the second one is really needed. The second point can be useful for paid games in order not to enter a password.
conclusions
As you can see, the Touch ID feature is not that scary. Now you know what it is for in your device and what it is.
As for the settings, everything is also simple. Apple usually tries to keep the process as simple as possible, so you can always find a bunch of tips on exactly what to do and in what order.
The first Apple smartphone with a Touch ID fingerprint scanner was the iPhone 5s, which hit the market back in 2013. Since then, the "apple" corporation has managed to develop and begin to implement the second generation of the fingerprint module, which is distinguished by increased recognition speed and increased reliability. However, problems can occur with any generation of Touch ID, so the edition site decided to talk about five ways that will fix a badly working fingerprint scanner in the iPhone and iPad.
Activate Touch ID in iOS Settings
Before starting to look for the cause of the non-working fingerprint scanner in the iPhone and iPad, you should make sure that it is enabled in the settings of the iOS operating system. To do this, you need to launch the "Settings" application, and then go to the "Touch ID and Passcode" section and activate the toggle switches opposite all the parameters associated with this module. If they are already on, then they can be turned off and on again in order to exclude the possibility of some kind of bug.
Clean the module from dirt and dust
Since Touch ID performs a finger scan, it should always be kept clean. Of course, you should not overdo it with cleaning, but dirt and dust can cause poor performance of the entire module and lead to incorrect fingerprint recognition. You can remove dust and dirt from Touch ID with a special electronics cleaning solution. It should be sprayed onto a microfiber cloth and thoroughly clean the entire module for a few minutes, and then test its operation.
Update the iOS operating system to the most recent version
Despite the fact that the iPhone and iPad are some of the most reliable mobile devices in the world, the iOS operating system can experience some glitches and glitches. As a result, the Touch ID module may not work correctly on certain firmware versions. This issue is resolved by updating the device to the most recent version of iOS, which for sure does not have software problems with Touch ID.
Finger placement when scanning
In some cases, unlocking iPhone and iPad via Touch ID may not work for the simple reason that the fingerprint scanner cannot scan. To help him do this, place the pads of his finger all over the fingerprint scanner. Plus, Touch ID takes some time to scan, so don't take your finger off the scanner too quickly.
Adding additional prints
Up to five fingerprints can be added to all iPhones and iPads to unlock the device. Apple does not impose any restrictions on this, so the same finger can be scanned several times, thereby increasing the chances of successfully unlocking the device with it.
If all the described methods of solving problems in the operation of Touch ID did not help, then you should think about visiting a service center. It often happens that the fingerprint modules in the iPhone and iPad fail and the only way to solve the problem is to visit the ASC. Note that repair or replacement of Touch ID is possible only at authorized service centers that are able to "tie" the new fingerprint scanner to the old hardware.
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