A Survey on Multifactor Authentication Approaches Door Lock System

In a smart environment smart door lock is very important because previously they carried the traditional methods like carrying keys etc. after that they developed a biometric method for security for the users in different sectors because they are unique characters and that are also involved in hacking and using less quality component .and It is most important in present environment because the technology is very fast and they are not carrying key because if they lose the key it is hard to break the lock and it give high security for safety purpose because if we add smart door lock your home means it gives notification to your phone directly open or lock the door if any person came in front of the door if you are in another place it is easy to allow the person .there are so many methods used for smart door lock system but even though there are still having the challenges for security and photography. This summarized all the existing methods for solving the problem using iris recognition. By observing all the existing solutions Iris gives high security compared to other biometric.