Fingerprint reader on the phone - how does it work or is it useful?

Today's smartphones are no longer just a portable computer or game console. More and more often it is a mobile data warehouse for us, for many people also a wallet, to which they pay for their purchases. The newest models get so many different sensors and technological novelties that everyone can choose something that they will need, useful. One of the novelties from a few years ago is the fingerprint reader.

At present, it is an element that has become a part of these devices for good. How does it work or is it really needed?

How does a fingerprint reader work?

Each of us has unique fingerprints. In order for the reader to work properly, you will need to scan your fingerprint. Therefore, when we configure the device, we are asked to apply the imprint to the reading surface several times. This saves the full image of the fingerprints on the device. When you touch the reader, the device recognizes the fingerprints and decides to unlock the equipment. Of course, if the imprint is identical to the one stored in the device. To unlock a smartphone, the device does not need to compare the entire image stored in the memory, such a process would take too long and require a lot of computing power.

The device can compare several characteristics of fingerprints and thus be able to unlock the equipment quickly. Thanks to that, such a reader works very well and the user can expect to get to his device quickly when such a need arises.

All this makes it possible to talk about comfort when using a fingerprint reader. Fingerprint reader in different versions have models such as: Huawei Mate 10 Pro, Honor 9, Samsung Galaxy S8, Sony Xperia XZ1, Xiaomi Redmi 4X, Lenovo K6 Note, Motorola G5S, LG G6, Samsung Galaxy A5 (2017), Xiaomi Mi6

There are several different types of readers. In the case of smartphones, these are usually capacitive factors. In this case miniature capacitors are used to read the circuit. When the finger is applied, the capacitor capacity changes and the imprint is read out. The reader has gained popularity mainly due to its simplicity at the time when we use it. Just apply a fingertip and the phone is ready to work. There is no need to enter a password or draw lines on the screen, which takes more time. Such a solution is also more secure, there is no fear that someone will have our password. So we protect our private data and everything we have stored in this device.

Other functions of the fingerprint reader

Some companies also use the reader more widely for additional activities. This is why you can, for example, log in to mobile banking or confirm payments by phone. So the technology is used to secure data, is more effective than other methods of protection, because there are no two people with the same fingerprints and imprints, so that the equipment is effectively protected.