Chapter 4. Access Control with a Fingerprint Sensor

In this chapter, we are going to build a more complex secret agent project: an access control system using a fingerprint sensor. We will connect the fingerprint sensor to Arduino along with a relay and an LCD screen.

Based on this hardware, we will build several cool projects. The following are the steps that we will take for this project:

• First, we are going to record your fingerprint in the sensor so that you can get access

• Then, we will use the fingerprint sensor to open or close the relay

• Finally, we will create a system with the LCD screen to grant access to a secret piece of data stored in Arduino

Let's dive in!