Which field is used to enter password?
The <input type="password"> defines a password field (characters are masked). Note: Any forms involving sensitive information like passwords should be served over HTTPS.
What is the purpose of login in?
Logging in is usually used to enter a specific page, website or application, which trespassers cannot see. Once the user is logged in, the login token may be used to track what actions the user has taken while connected to the site.