About Fingerprint Recognition

Fingerprint sensor:The fingerprint sensor is mainly using for security purposes, Initially these fingerprints are coming as in Biometric devices, they used to unlock doors and in other security applications and now we are using everywhere in smartphones,Laptops, Tabs and other electronic devices so on..........

There are some types of fingerprint sensors are using in this present generations i.e:

1)Capacitance Fingerprint sensors
2)Optical Fingerprint sensors
3)Ultrasonic Fingerprint sensors

We can see among these fingerprints, which one is more secure?

What is an Capacitance fingerprint sensor ?
Thecapacitance fingerprint sensor it isa normal physical fingerprint, we can see in so many phones like Realme 2pro, Realme U1 and iPhones soon...., In this capacitance fingerprint sensor, they are so many capacitors are located in this specific region,

In our body there will be small current , when we are placing our finger ,The capacitor will charge(absorbs) the current in our body and it will activate and scan our fingerprint and checks whether with recorded fingerprint data(initially when you set up fingerprint)is matches or not, whether it matches it will unlock or it won't unlock,There will be specialty in this, It is when a person has died, Anybody can't unlock the smartphone via fingerprint , The fingerprint is very unique for everyone , we can't match the fingerprint by using any software.

What is an Optical fingerprint sensor ?
The Optical fingerprint sensor it is an under display fingerprint or we can say as in-display fingerprint ,we can see in so many phones like Oneplus 6t and Vivo smartphones , In this optical fingerprint sensor, there will be a small camera instead of capacitors , it will take the small 2D photo shot of our fingerprint .

When our fingerprint is placed on the optical fingerprint sensor it will checks with recorded 2D photo fingerprint (initially when you set up),whether it will matches it will unlock the phone,There is no specialty in thisfingerprint as like Capacitance fingerprint sensor, when a person has died, Anybody cant unlock the smartphone via his fingerprint . Moreover we can say it is not safe and not secure

What is an Ultrasonic Fingerprint sensor ?

The Ultrasonic fingerprint sensor it is an under display fingerprint or we say as an in-display fingerprint we can see in some phones like the latest Samsung Galaxy S series phones , But it ismore advanced comparedto all previous fingerprints, In this Ultrasonic Fingerprint sensor, there will be 3D scanner and wave detectors it will detect the blood flow rate and also our movements.

When our fingerprint is placed on the Ultrasonic Fingerprint, It will take the 3D deep internal photos of our fingerprintand it will also release the ultrasonic waves, to detect our blood flow rate in our body and by using the 3D and ultrasonic waves, It will scan the whole finger internally and externally , At last it will match with it recorded fingerprint data (initially when you set up the fingerprint) , whether it matches , it will unlock or it won't unlock . It is more secure compared to all other fingerprints.

Sources:Wikipedia