What is a "Cached image"?

What is the best way of modifying photo to make it invisible for Google Image search without much noticeable difference?

• I have an image, there is a same image Google already cached. What is the way to change it in photoshop to trick Google Image Search and make '0 results' output and leave image recognizable for human?

• Answer:

  Recently in 2012, Google purchased a company that does Facial recognition http://news.cnet.com/8301-1023_3-57525666-93/google-confirms-its-buying-facial-recognition-firm-viewdle/ Because it is a digital fingerprint that take certain points of your face, it is possible to morph the image so those grid points are no longer valid. The more photos and angles the database can fingerprint, the more likely it can even recognize a morphed image.  In 2013, it is unlikely there will be many people that cannot be recognized, even with morphed or blurred photos on the Internet Just because a Google search produces '0' results, it doesn't mean Google doesn't know who you are.  As Bing, Facebook and others use slightly different technologies, the odds of being un-found are substantially less.  If you don't want to be found at this point, you can't use the Internet.  Government and private industry already have their own photo ID databases, so you still are not protected from being identified. http://www.extremetech.com/computing/132077-google-drive-on-ios-image-recognition In Addition Recognize and several others have this technology in various forms of capability. https://www.recognize.im/ recognition