At about one third the width of a human hair, these images cannot be seen without the aid of a microscope. They began with a practical purpose. Copyright infringement within industry ran rampant in the 1980s, and microscopic images on integrated circuits were devised as a way to prove if one of their designs were stolen
Engineers Might Have Hidden Microscopic Art On Your Motherboard
At about one third the width of a human hair, these images cannot be seen without the aid of a microscope. They began with a practical purpose. Copyright infringement within industry ran rampant in the 1980s, and microscopic images on integrated circuits were devised as a way to prove if one of their designs were stolen
The Southern Nerd 