Touch ID (fingerprint unlock) is a special technology that allows you to unlock your smartphone with your fingerprint. Nowadays, this option can be found on every mid-priced phone. This technology first appeared on Apple devices. But subsequently, it was adopted by all known smartphone manufacturers.
The principle of the standard fingerprint scanner is quite simple. A special sensor platform analyzes the ridges and valleys on the finger pad and then compares the result with the fingerprint stored in the device’s memory. The system instantly transmits a signal if everything matches, removing the protection. Modern scanners can analyze an attached finger in a fraction of a second. This undoubtedly makes using a smartphone more comfortable.
To set up Touch ID on your Xiaomi phone, follow the path: “Settings” → “Passwords and Security” → “Fingerprint Unlock” → “Add Fingerprint”. Carefully put your finger on the scanner and follow the instructions on the screen.