How should we regulate facial-recognition technology?

The privacy concerns with facial-recognition technology are obvious: Nothing is more “personal” than one’s face.

So how is the processing of facial data regulated, whether such data is collected by a government agency as in China, or by a private entity like Apple or Facebook? And as facial-recognition technology use becomes more pervasive (as widely predicted), what restrictions are appropriate in the future?

Full article: How should we regulate facial-recognition technology?