Help with fingerprint sensor

I got library of enrolling finger print but I must give it ID ends with #

How can I make it by pressing button and automatically generating Id for it and changing serial monitor written feed back to led lights.

should I make it generating integers +# for fingerprints ID.
Thank you...

Please provide link for the sensor.

Weedpharma

I`m looking for some help about programming.
Is any body her can explain fingerprint code for me so I can make changes to it.

Does this have anything to do with Arduino?