This isn't really a new policy, but because facial recognition is such a hot button issue, and Google Glass is a lightning rod for privacy concerns, Google wants to constantly reassure people that it has no plans to allow the technology just yet. In a Google+ post, the company said:
While Google has said it will not use facial recognition without proper privacy protection, this is the first time the company has specifically said it would not approve Glass apps that use the technology. Also, according to AllThingsD, Google will not allow the Glass screen to be turned off while taking a picture, so it is more apparent to others that a photo is being taken.
And, this news comes at a pretty good time, because we're having a discussion at PA about Google and privacy. We understand that the data collection Google does unnerves some people, so we're asking people to weigh in on exactly why they have trouble trusting Google. If you have an opinion, just head over to the topic article and comment!