Tech News How Much Do I Need to Change My Face to Avoid Facial Recognition? A hat and sunglasses may not be enough to fool the most sophisticated facial recognition algorithms.

You can opt out of facial recognition in some cases, but the history and future of the technology suggest we’ll need bigger solutions to its privacy problems.

Here's how it works. A face shot is submitted to a facial recognition system, which measures distinctive characteristics such as the width of nose and depth of eye sockets.