A modern reality is that we have a lot of passwords to remember, and it's becoming a problem. Considering that every day we face a heavy data stream it’s not always easy either to create a hard-to-crack password or to remember it afterwards. However authentication is clearly important. People are trying to get rid of passwords altogether and fingertips are a good way out of the situation. Nevertheless online security market keeps growing. Companies are trying to use other parties of bodies than fingertips as unique “password” of a person. Faces and eyes seem to be on the top of the list of future passwords.