Logging in lets the computer know it's you, and helps the user in two major ways. First it sets up all your settings, your screen saver, desktop background, and any other likes and dislikes that you want to personalize the way you like it so that you have a better experience. The other major thing logging in does is organize your files and data into your own personal location on the hard drive. For instance your pictures are in your Pictures folder while another users pictures are in their pictures folder. Same with movies, music, and any other files and data.
Logging on the computer.....
A CPU, or central processing unit, is considered to be the brain of a computer and is responsible for making decisions. A CPU helps users the same way that a computer helps users, computers are able to assist humans to do many things more quickly and more easily.
Some kids appriciate the use of large passwords. Longer passwords and a mix of letters and numbers should keep users from logging on to your account.
Logging in.
It could be a different issue... But it seems like you tried to change users without logging off, or trying to change something that only an administrator can and you weren't logged in as one.
to secure it
First of all you can see a history of recent used files, folders, programms, visited sites. Then you can install a keylogger - soft which record all keyboard activity of your computer. It can show what was happening on your computer. If you computer is password protected you can use program which record all login attempts on your comp.
People who use the computer are often simply known as "users".
Advanced Computer users.
provides device identification to users logging on remotely
They probably record Ip addresses of users logging in.
Users can obtain a lot of information on Charles Schwab without logging into their website. This includes information on the different types of services they offer and their pricing, and users can also use the contact form to contact the company.