bogeyer wrote:. It doesn't respond, the arduino cant find it and it just doesn't work
The first step in the tutorial is to connect it to a windows computer, and configure it with a windows program. Does the windows program not see the sensor? Are you certain that you have connected the sensor to the computer properly, and have you loaded the proper arduino sketch?
You say that the arduino can't find it. What sketch are you running on the arduino? The fingerprint sensor won't do anything without an appropriate arduino sketch loaded and running.