Not an API per se, but OpenCV face tagging with Python! Here's an old
and hacky example...I bet there are better ones out there now.

http://creatingwithcode.com/howto/face-detection-in-static-images-with-python/

Kam

On Fri, Oct 26, 2012 at 12:59 AM, Wilhelmina Randtke <[log in to unmask]> wrote:
> I used face.com 's facial recognition API, when it was available, to do a
> project where I tagged some people in a set of photos and then it suggested
> who unidentified people might be.
>
> I want to do something similar for a digitization project, but face.com was
> bought by Facebook, so no more API for me.
>
> Does anyone here know of an available API for recognizing and tagging faces
> in photos?
>
> -Wilhelmina Randtke