How many ways can you secure your Mac. You know, lock it tightly to keep your files away from prying eyes. If your Mac is at home, on the road, or in an office, an easy and free way to another security level is the password protection mechanism built into OS X.
This is not the only thing you can do to secure your Mac from prying eyes, but it helps. Adding the password is easy (Apple's support page has details). Open system settings, click Security and Privacy, and then click the General tab.
Here are the options.
Easy peasy, right?
Wait. It does not customize the Mac login screen. Just add the password option. How can you customize the screen and get rid of your Mac from the boring OS X logging background?
This free Mac tool gives you the easy option to replace the boring background image with which image you want to replace it. It is drop dead easy to use and just as easy to return to normal. Drag and drop the image you want to use, click Insert new login image, and you're good to go.
Now that you have custom login screen. To return to OS X's default background, just click the Reset to Default Image button and you're back.
Some warnings? So far, just one. Choose wallpaper carefully because the wrong image can hide the login buttons so they are not readable when the Mac starts up. High contrast is better and unfortunately Loginx does not have the ability to show how the custom image will look before installing it.
Otherwise, you get some customization on another layer of security and it's free.