EditorialThermal scanners check every visitor to the Student Union Building at the University of Idaho in Moscow, Idaho, on Feb. 23, 2021. (Rajah Bose/The New York Times)
EditorialElection workers process sample ballots during a logic and accuracy test for ballot scanners at the Pinellas County Supervisor of Elections office in Largo, Fla., Wednesday, Oct. 14, 2020. (Eve Edelheit/The New York Times)
EditorialKastle Systems demonstrates a thermal camera used to measure temperatures in Arlington, Va. on June 9, 2020. (Jared Soares/The New York Times)