Sometimes you need to step away from you computer for a moment but you want your computer to be locked down, so for example, your kids can’t access it. One way to do this is to logout of your user profile, but that requires closing the programs you have open and it can take a while to open up again. Luckily there is a way you can lock the computer down quickly and instantly.
In a Windows environment, simply hold down the Windows key on the keyboard then press the “L” key to lock the screen. The screen will switch to the login screen and will require you to enter your password to unlock the screen. If you don’t have a password set for your computer user you will have to go into the control panels and set one in the User Accounts section. Remember to set a hint to use if you forget your password.
On a Mac, first go to your System Preferences by clicking on the apple icon in the top left corner of the screen and choosing System Preferences. In System Preferences click on the options for Security. In the Security menu check the checkbox marked Require password immediately after sleep or screen saver begins.” Now click on Show All in the top left corner of the System Preferences. Then, click on the Desktop & Screen Saver options. If needed, click on the tap at the top for Screen Saver. In the bottom left corner of the window click the button named “Hot Corners.” Click on the corner you want to use and choose “Put Display to Sleep” under the options. Now whenever you want to lockout your screen just move your cursor to that very corner. If you don’t have a password setup go back to the System Preferences and set one up under the Users options.