Great job friend, i was looking for this think like a year ago... just for research purposes! THANKS

We have already discussed the use of the first biometric, which is the face of the person trying to login to the system. However since we mentioned that using a single biometric can be quite risky, we suggest adding secondary biometric checks to the system, like the fingerprint of a person. There are many of the shelf fingerprint scanners which are quite cheap and return you the scanned image. However you will still have to write your own registration software for these scanners and which can be done by using OpenCV software.