Authentication is the mechanism of the challenge response in which it basically allow the server to challenge the user with the number without revealing any password.
Then the user must enter that particular password to enter into the device for calculating the particular response number. Then it basically compute the given response by apply hash function in the server challenge that combine the users password.
Hans Jansen, his son Zacharias Jansen, and Hans Lippershey
Explanation:
Three Dutch spectacle makers have received credit for inventing the compound microscope about 1590. The first portrayal of a microscope was drawn about 1631 in the Netherlands.