Meaning – The term log-on, refers to the process of accessing a secure computer system or website. When you log on to a system, you provide “login” information that authenticates you as a user. This information typically includes a username and password, though some logins require extra information, such as a PIN number or a correct answer to a security question.
Most computer systems can be configured to require users to log on before accessing the system.
Similarly, when you access a remote system through a remote-access or FTP connection, you may be required to log on to the system.
Example of usage – “When you create an account on a secure website, you are typically required to log on to the site each time you want to access your account information.”