Facebook chose the "opt out" rather than "opt in" method of adding the tech. That decision, plus the lack of a blog post detailing the roll-out, meant that many users of the network were unwittingly exposed to Mark Zuckerberg's face-scanning tech.
"We launched Tag Suggestions to help people add tags of their friends in photos: something that's currently done more than 100 million times a day," said the Facebook spokeswoman.
"When we announced this feature last December, we explained that we would test it, listen to feedback and iterate before rolling it out more broadly," said a Facebook spokeswoman.
"We should have been more clear with people during the roll-out process when this became available to them. Tag Suggestions are now available in most countries and we'll post further updates to our blog over time."
