The app, which allows users to share mobile-phone photos with friends without posting them publicly, was launched in the US this week.
The Irish data regulator said that users must be given a choice about whether they want it, with an opt-in.
Richard Allen, Facebook's head of policy in Europe said: "We don't have an opt-in mechanism so it is turned off until we develop one."
The Irish data regulator said that users must be given a choice about whether they want it, with an opt-in.
Richard Allen, Facebook's head of policy in Europe said: "We don't have an opt-in mechanism so it is turned off until we develop one."
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