# Source: https://learn.adafruit.com/adafruit-optical-fingerprint-sensor.md

# Adafruit Optical Fingerprint Sensor

## Overview

![](https://cdn-learn.adafruit.com/assets/assets/000/002/499/medium800/biometric_fingerprintuse.jpeg?1396783822)

Secure your project with biometrics - this all-in-one optical fingerprint sensor will make adding fingerprint detection and verification super simple. These modules are typically used in safes - there's a high powered DSP chip that does the image rendering, calculation, feature-finding and searching. Connect to any microcontroller or system with TTL serial, and send packets of data to take photos, detect prints, hash and search. You can also enroll new fingers directly - up to 162 finger prints can be stored in the onboard FLASH memory.

http://youtu.be/1diFaa5OsFg

We like this particular sensor because not only is it easy to use, it also comes with fairly straight-forward Windows software that makes testing the module simple - you can even enroll using the software and see an image of the fingerprint on your computer screen. But, of course, we wouldn't leave you a datasheet and a "good luck!" -[we wrote a full Arduino library so that you can get running in under 10 minutes. The library can enroll and search so its perfect for any project](https://github.com/adafruit/Adafruit-Fingerprint-Sensor-Library "Link: https://github.com/adafruit/Adafruit-Fingerprint-Sensor-Library"). We've also [written a detailed tutorial on wiring and use](http://learn.adafruit.com/adafruit-optical-fingerprint-sensor). This is by far the best fingerprint sensor you can get.

- **Supply voltage:** 3.6 - 6.0VDC
- **Operating current:** 120mA max
- **Peak current:** 150mA max
- **Fingerprint imaging time:** \<1.0 seconds
- **Window area:** 14mm x 18mm
- **Signature file:** 256 bytes
- **Template file:** 512 bytes
- **Storage capacity:** 162 templates
- **Safety ratings** (1-5 low to high safety)
- **False Acceptance Rate:** \<0.001% (Security level 3)
- **False Reject Rate:** \<1.0% (Security level 3)
- **Interface:** TTL Serial
- **Baud rate:** 9600, 19200, 28800, 38400, 57600 (default is 57600)
- **Working temperature rating:** -20C to +50C
- **Working humidy:** 40%-85% RH
- **Full Dimensions:** 56 x 20 x 21.5mm
- **Exposed Dimensions** (when placed in box): 21mm x 21mm x 21mm triangular
- **Weight:** 20 grams

- [Next Page](https://learn.adafruit.com/adafruit-optical-fingerprint-sensor/enrolling-vs-searching.md)

## Featured Products

### Fingerprint sensor

[Fingerprint sensor](https://www.adafruit.com/product/751)
Secure your project with biometrics - this all-in-one optical fingerprint sensor will make adding fingerprint detection and verification super simple. These modules are typically used in safes - there's a high powered DSP chip that does the image rendering, calculation, feature-finding and...

No Longer Stocked
[Buy Now](https://www.adafruit.com/product/751)
[Related Guides to the Product](https://learn.adafruit.com/products/751/guides)
### Rugged Panel Mount Fingerprint Sensor with Bi-Color LED Ring

[Rugged Panel Mount Fingerprint Sensor with Bi-Color LED Ring](https://www.adafruit.com/product/4651)
Secure your project with biometrics - this all-in-one optical fingerprint sensor will make adding fingerprint detection and verification super simple. It even has an LED ring built around the detection pad, which can be set to red, blue or purple (as well as some fading/blinking effects) for a...

In Stock
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We sure love the ATmega328 here at Adafruit, and we use them&nbsp;_a lot_&nbsp;for our own projects. The processor has plenty of GPIO, Analog inputs, hardware UART SPI and I2C, timers and PWM galore - just enough for most simple projects. When we need to go small, we use a <a...></a...>

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75 flexible stranded core wires with stiff ends molded on in red, orange, yellow, green, blue, brown, black and white. These are a major improvement over the "box of bent wires" that are sometimes sold with breadboards, and faster than stripping your own solid core wires. Makes...

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