In principle, the power consumption of the optical module is relatively large, and the power consumption of the capacitor module is relatively small. Our fingerprint module has a touch wake-up function. The power consumption in standby mode is only microampere (ΜA) level, and it will be milliampere (MA) level when registering and comparing. As long as the touch wake-up function is used effectively, the power consumption will be Greatly reduced.