Taylor Swift secretly used face scanning technology to capture images of every concertgoer at her concerts, according to Rolling Stone.
The "Bad Blood" singer used hidden facial recognition technology to identify obsessed stalkers among her fans at her concerts.
Taylor, 29, has been plagued by stalkers over the course of her pop music career. Earlier this year a man was arrested outside her Los Angeles home. He was armed with a knife and ammunition.
According to Rolling Stone, the facial recognition technology was in use at Taylor's Rose Bowl concert in Pasadena, Calif. in May. Hidden cameras scanned the faces of every concertgoer who entered the stadium.
The fans' images were then cross-referenced with known sex offenders and stalkers.
Mike Downing, chief security officer of Oak View Group, tells Rolling Stone magazine: "Everybody who went by would stop and stare at it, and the software would start working."
Downing referred to the technology as "anti-stalker software."
Last week, a man who broke into Taylor's New York townhouse was arrested and jailed for six months. He plead guilty to one count of attempted burglary and one count of criminal contempt.
Other stars who have been plagued by stalkers include Bajan singer Rihanna. She listed her Los Angeles mansion for $7.5 million and moved to London after a man broke into her home and stayed long enough to charge his phone overnight.
The man told police he intended to have sex with the pop superstar.
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