The social media giantannounced recentlythat it had built software that can learn from what it is looking at.

The program was taught to recognize images by reviewing over 1 billion public photos.

Experts say users should be aware that Facebook is using their pictures.

A bust of a person with AI recognition points overlaid on the face and neck area.

John Lamb / Getty Images

Users can turn facial recognition on/off in their privacy prefs."

It also could be used to automatically describe images, improving user experiences for people with visual impairments.

“Even so, users may still feel uncomfortable with their images being used in this way.”

Facial recognition scanning a person up close but also several people in a crowd.

John M Lund Photography Inc / Getty Images

But Facebooks approach of leveraging billions of Instagram images raises some serious privacy and regulatory concerns, Behzadi said.