₦airaland Forum

They eat 150mA peak current, and 120mA when reading. They are not always active, only when the phone is expecting an authentication.
They are never alone, but packaged with a capacitative touch sensor, so when the touch is triggered the fingerprint sensor starts reading.
Infinix smartphones vibrate when a successful fingerprint reading is achieved. This kind of feedback uses more current than the sensor itself!

Compared to other subsystems in a phone like Wi-Fi(300mA peak), screen(100–400mA continuous) and bluetooth low energy(15mA continuous), the fingerprint scanner is NOT an energy hungry sensor.

http://www.infinix.club/ng/forum/687/937509

felasey1:
They eat 150mA peak current, and 120mA when reading. They are not always active, only when the phone is expecting an authentication.
They are never alone, but packaged with a capacitative touch sensor, so when the touch is triggered the fingerprint sensor starts reading.
Infinix smartphones vibrate when a successful fingerprint reading is achieved. This kind of feedback uses more current than the sensor itself!

Compared to other subsystems in a phone like Wi-Fi(300mA peak), screen(100–400mA continuous) and bluetooth low energy(15mA continuous), the fingerprint scanner is NOT an energy hungry sensor.

http://www.infinix.club/ng/forum/687/937509

dont understand oo