Taylor Swift Reveals Secret Eras Tour Fact About 'TayRoomba' Used for 'Down Bad' and 'Who's Afraid of Little Old Me?'

Brian Anthony Hernandez, a seasoned journalist, recently joined PEOPLE as a writer-editor. Taylor Swift's "TayRoomba" platform, manned by a crew member, adds a unique touch to her Eras Tour performances, revealed in her tour book.