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In connection with the new iPhone, nothing else is being talked about now, other than how it will be unlocked. If we will continue to use the fingerprint, where will we attach it, or if by chance Touch ID will not completely disappear and be replaced by another security technology. The departure of the fingerprint sensor might not be as dramatic as it might seem after all. However, there are a few but by...

Introduced in 2013 with the iPhone 5S, Touch ID quickly became the standard for unlocking mobile devices with a fingerprint. Apple was able to fine-tune the technology, which until then worked very awkwardly on many products, to perfection - here we are already talking about the second generation of Touch ID from 2015.

Unlocking with the touch of a finger is now so fast that Apple even had to remodel the entire iOS unlocking process so that the user could, for example, view incoming notifications. That's why many people now shake their heads in incomprehension when they hear that they would Apple could remove Touch ID on its phone.

A necessary sacrifice perhaps

If Touch ID does not actually appear in the new iPhone, there will probably be one main reason. Apparently, Apple will follow the example of the competition with a giant display practically across the entire front of the phone, where the button or fingerprint sensor will no longer fit.

In such a case, two variants are most often mentioned - to move the technology several levels further and get it under the display, or move Touch ID to the back. The second option was chosen by Samsung when it placed the fingerprint reader from front to back on its Galaxy S8 phone, which came with a large edge-to-edge display. The South Korean giant tried to get the sensor under the display, but failed.

samsung-galaxy-s8-back

Apple had about half a year more to develop, but according to many reports, even it did not manage to fine-tune the technology enough to make Touch ID under the display as reliable as it is now. And that is, of course, a problem for such a fundamental and, moreover, safety function.

But instead of Apple moving the button back in such a case, it might come up with a completely different solution. On the one hand, he may not like Touch ID on the back, on the other hand, he can follow technological progress by replacing it.

Progress that doesn't look like that at first glance

About the possible deployment of Face ID, as 3D face scanning has come to be known, instead of Touch ID he wrote Rene Ritchie for iMore following:

Another way to reliably perform authentication is by scanning your face. But not the dubious 2D scanning that has been deployed in other phones so far, but a 3D scanning that can use more points for identification than fingerprints can provide, and in milliseconds do what Touch ID has done with touch.

It's a really tough thing to do, but then again, fingerprint sensors were also embarrassing before the arrival of Touch ID. It often takes a company with the resources, vision and integration like Apple to move just such a solution forward.

It is the reliability of Face ID that would be absolutely key. If a face scan were to be used for authentication, it is absolutely essential to ensure that the technology can handle direct sunlight and very low light conditions. These are the cases where Touch ID doesn't have the slightest problem, but where current cameras often falter.

The expected 3D technology that Apple is supposed to build into the front camera of the new iPhone will certainly be more advanced, but it would still have to be a major step forward. At least similar to what Touch ID demonstrated years ago. On the other hand, Face ID would solve situations when your hands are wet, sweaty or dirty or you have gloves on them.

Given how Touch ID currently works and how important a feature it is, it would be a definite step backwards if its potential replacement - Face ID - didn't work at least as reliably. It is certain that Apple has been testing something similar for a long time and it is hardly conceivable that it would be willing to degrade the function in appearance, but certain doubts remain.

If Tim Cook comes forward in September and shows us a new and perfectly working security technology, we'll all take off our hats, but until then, it's sure to be a matter of speculation as to how the engineers at Apple will finally solve this conundrum.

And one more note, or rather a final question. No less important would be how, for example, bank applications and others that used a fingerprint for locking would cope with the transition from Touch ID to Face ID. For example, if Face ID didn't automatically start working (which has many security dilemmas for stakeholders), it could reduce user convenience.

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