Network Security Layers -  there are alternatives to passwords

Network Security Layers

 there are alternatives to passwords. Passwords are considered by many to be insecure and easy to break. So what are the alternative and how are they better?

For this discussion you will research alternative to traditional password that are created by users. Choose an article and summarize your chosen alternative method of authentication. Do you think it is a possible alternative? How difficult is it to implement and manage? Is special hardware needed to use it? Does it have its own weaknesses?  These are some of the topics you should be thinking about when you write