Hardware and software requirements

First, let's see with fingerprint sensor: software requisites "what with fingerprint sensor:hardware requisites" are the required components for this project.

As usual, we will use an Arduino Uno board as the brain of the project.

The most important part of this project is the fingerprint sensor. The following is an image of the sensor that I used:

You with fingerprint sensor:software requisites "need to get with fingerprint sensor:hardware requisites" the exact same model (from Adafruit). Otherwise, the code for this project won't work.

You will also need an LCD screen for the last part of this project. I used an I2C LCD screen from DFRobot that we already used earlier in the book.

I also used a Pololu 5V relay module, which is really convenient to connect to Arduino. A relay will basically allow us to control a wide range of devices, for example, from a simple LED to electrical appliances.

Finally, here is the list of all the...