Resource Owner Password Credentials Grant

The Resource Owner Password Credentials Grant is a way for users to log into applications using their username and password directly. Instead of redirecting to a separate login page, the app collects the user's credentials and sends them to an authentication server. If the credentials are valid, the server provides an access token that allows the app to access the user's data securely. This method is simpler but less secure than other methods, as it requires trust in the app to handle passwords safely. It's typically used in trusted applications where users know and trust the developer.