What is Touch ID, how does it work?
In this article we will analyze what Touch ID is and how it works.
One of the most interesting features of new Apple smartphones is Touch ID. This is a scanner, reading fingerprints. It is needed to unlock the phone and confirm operations in the App Store. Some considered it useless, because, in their opinion, to deceive the scanner is very simple.
In the early versions of this function on other smartphones, the craftsmen copied the drawing of the finger and applied to special surfaces. In addition, the scanner constantly issued reading errors and not always recognize the imprint correctly with a small angle of inclination, because of which it was necessary to press it 10-15 times.
But, the dactyloscopic sensor on the iPhone 5S, installed in the "Home" key, has a thickness of 170 microns, may conduct an analysis of subepidermal layers of the skin and receive a 500PPI resolution at the output. Thanks to all this is a high level of recognition accuracy.
Each user has the opportunity to train the Touch ID so that it recognizes not one finger, and somewhat, and touch the sensor can be at any angle. By the way, now the HOME branded key is not square, but a round. From above, it has a sapphire coating to protect against damage. In addition, the sensor works much better with them.
To date, this complex technical device is used in iPhone 5S only to unlock and confirm payments in the AppStore. In third-party applications, it began to be used already in the following versions of the smartphone.
Many believe that thanks to the introduction of the scanner, many users who have previously used complex passwords for setting the lock will gradually begin to use this feature.