If you are a "private" person and don't want your profile picture or name to appear on your friend's feed next to ads you liked, then follow this steps.
You have more people using one computer and you don't want them to be able to shut it down using a shutdown button on Windows logon screen, this is how you remove it.
Motorola disclosed an open-source project for modular smartphones, meaning you will be able to replace a camera with a new one, by simply changing the camera module. How great does that sound?