It operates very much like Facebook’s facial recognition technology `Photo Tag Suggest’. This tool scans the users’ and their friends’ photos for faces that are recognizable and suggests nametags for the faces by matching them with the profile photos and other tagged photos on the network.
Google will prompt the users to use the service before it starts automatically suggesting to their friends that they may be tagged in photos. Only when a user opts into this tool then a face model of that person will be made using his or her profile photo or the existing manually tagged photos on the site.
Google requires the subject of a suggested tag to approve it before it goes public. When Facebook turned its feature of facial recognition on last year, it suffered a lot of criticism from regulators across the world. It had apologized then and developed a way for users to opt out of the suggestion feature.
Even after reviving the tool again, Facebook is still being criticized for not requiring pre-approval for tags. Privacy advocates are saying that it is too late as users can only remove tags once they have already gone public. Users can adjust their privacy settings to pre-approve tags before they are linked to their profile. The only way to avoid the situation is to adjust their privacy sett
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