THIS IS HOW A SMARTPHONE SCANS YOUR 'FINGERPRINT'.

In today's digital age, it is common for all of us to have a smartphone. Smartphones have become an integral part of our daily lives. Mobile manufacturers are bringing new features to their smartphones from time to time to attract more and more customers. Such features not only provide an attractive user experience but also increase the company's profits.

For years, companies have been offering fingerprint scanner features for the safety and convenience of the user. Nowadays, almost all smartphones have this feature. But have you ever considered how a fingerprint scanner works? This is what we are discussing today.

Smartphones use optical, capacitive and ultrasonic technology to read your fingerprints. The optical fingerprint reader uses a special type of camera. Which takes a picture of your fingerprint. After doing so, it sends a photo of your fingerprint for verification. Going forward, the mobile converts your fingerprint photo into a code. However, with the help of a good fingerprint picture, this sensor can be easily deceived. So it is connected to a capacitive scanner. This technology can detect whether there is a fingerprint or just a picture on the screen.

A capacitive fingerprint scanner stores electricity using a tiny capacitor grid. When a wave of your fingerprint touches the capacitor grid, electricity is discharged. This is how a array of thousands of capacitors is used to map your fingerprint.

In addition, ultrasonic fingerprint scanners are used to scan modern fingerprints. It is mostly used in medical related work. It transmits a special type of ultrasonic pulse to your fingerprint. Then the pulse that comes from your fingerprint is measured.