Plagiarism is a common problem in most industries. Art and design companies tend to get their work copywrited or have their work patented. In an ideal world people would not steal ideas, they would buy the rights to use it. Sadly with their being not much new under the sun it is very different.
In Adobe InDesign, you can choose to place an image that is just a link to the folder it is in. This means that if the document is used on another computer, the image will not be there, only a box, as the image ‘would not be found’.
Although this method can be advantageous when it comes to avoiding plagiarism, it can be a hassle when trying to show others your work on other computers.