iOS 7 detects blinking and smiling in photos

In iOS 7 beta 2, Apple has added new photo detecters that can detect certain facial expressions like blinking and smiling. In iOS 5 and iOS 6 the APIs provided basic facial recognition, and soon after Apple implemented face detection in the stock Camera app.

So in the future, when Apple implements new functionality in Camera app, users might get notification if the taken photo has some blinking.