Hi, First, thanks for reading this. I need to make a "fingerprint reader" for a security control (start a very expensive machine). but I don't have idea how I can do this, I have some Laser Diodes from CD-ROM unit, but I need information how can I read the fingerprint and compare the data with a personnel database and turn on the machine (I wish use the 16F84 for control) Really, please help, keep my job depent on that! Thanks is advance Sincerely Cesar E. H. White