Interfacing to Adafruit fingerprint sensor

I will see....
The logic for enrollment will definitely use the interface module.
This module have to contains all the logic to interface the sensor.

But the logic to enroll a fingerID is quite long, as it require for example to take three image, compare, etc etc.
And I thought that all those code might make the base module heavier in term of size. That's why I thought about additional module.. will see...
But code example at minimum :)