EU regulators have proposed strict curbs on the use of facial recognition in public spaces, limiting the controversial technology to a small number of public-interest scenarios, according to new draft legislation seen by the Financial Times.

In a confidential 138-page document, officials said facial recognition systems infringed on individuals’ civil rights and therefore should only be used in scenarios in which they were deemed essential, for instance in the search for missing children and the policing of terrorist events.

The draft legislation added that “real-time” facial recognition—which uses live tracking, rather than past footage or photographs—in public spaces by the authorities should only ever be used for limited periods of time, and it should be subject to prior consent by a judge or a national authority.