Facebook plans to use postcard technology dating back to 1861. Advertisers that run ads mentioning a specific candidate to a federal office will receive a unique code by snail mail. Facebook believes this is the best way to prevent bad actors from posing as someone they are not. The requirement will not apply to issue-based political ads, Facebooks global director of policy programs said. U.S. lawmakers recently unsealed an indictment accusing three Russian companies of conducting a criminal and espionage conspiracy using social media to interfere in the election by boosting Republican Donald Trump and denigrating Democratic candidate Hillary Clinton”]