Overview

The Capacitive Fingerprint Reader is a standard fingerprinting module designed for secondary development, allows fast and stable fingerprint verification.

Based on a high-speed digital processor STM32F105R8, combined with high-security commercial fingerprinting algorithm, and advanced semiconductor sensor, the Capacitive Fingerprint Reader becomes a simple but smart integration module, provides functionalities like fingerprint enrolling, image processing, feature finding, template generating and storing, fingerprint matching and searching, etc.

Features

• Easy to use by some simple commands, you don't have to know any fingerprint technology, or the module inter structure/calculation
• Commercial fingerprinting algorithm, stable performance, fast verification
• Sensitive detection, just touch the collecting window lightly, without pressing
• Allows to freely input/output fingerprint images, fingerprint feature file and other fingerprinting actions
• Dual communication, UART or USB
• Processor will enter sleep and wake up when detecting, achieves low power consumption
• Comes with rich related resources (software on PC, development SDK, tools, and examples for Raspberry/Arduino/STM32)

Applications

• Fingerprint lock
• Fingerprint safe deposit box
• Access control system
• Clock in and out

Specifications

Dimension

Development Resources

Wiki : www.waveshare.com/wiki/Capacitive_Fingerprint_Reader

Recommended Items

We also provide this USB to UART Module for easy testing: CP2102 USB UART Board (micro)

Selection Guide

Product	Optical	Capacitive
	A	A	B	C	D	E	R
Pros	Durable, excellent anti-electrostatic			Small form factor, low power consumption
		High precision, good detection/verification		Small collecting area, high precision, good detection/verification		High precision, good detection/verification
Cons	Large dimension, low precision, interfered by lighting	High environmental requirement (temperature, humidity, dust, alkaline air)
Features	Separated structure			Round-shaped, all-in-one		Rectangle-shaped, all-in-one
Fingerprint capacity	4000	3000		500	150	3000
Image pixels	248*296	192*192	208*288	192*192	160*160		192*192
Interface	UART	UART, USB		UART
False acceptance rate	<0.001%	0.0001%	<0.001%	<0.001%
False rejection rate	<0.1%	0.01%	0.1%	<0.1%
Sensor life time	10 years	about 200K times	about 5M times	about 1M times
Use condition	More sensitive for wet fingers	More sensitive for dry fingers
Applicable products	Used frequently, like access control system	Require high precision, like fingerprinting lock
	Generally, optical modules are used in low-end products, while capacitive module are suitable for high-end products

1. Capacitive Fingerprint Reader x1
2. PH2.0 wire 20cm 6Pin x1

1

2