How facial recognition works (and how to hack your own in Python)

You could not ask for a clearer, easier-to-read, more informative guide to facial recognition and machine learning thank Adam Geitgey's article, which is the latest in a series of equally clear explainers on machine learning, aimed at non-technical people -- and if you are a programmer, he's got links to Python sample source and projects you can use to develop your own versions. (more")