POSTCARDS WILLHELP CONFIRMADS ONFACEBOOK

MENLO PARK, Calif. — Facebook will soon rely on centuries- old technology to try to prevent foreign meddling in U. S. elections: the post office.

Baffled in 2016 by Russian agents who bought ads to sway the U. S. presidential campaign, Facebook’s global politics and government outreach director, Katie Harbath, told a meeting of the National Association of Secretaries of State inWashington on Saturday that the company would send postcards to potential buyers of political ads to confirm they reside in the U. S.

The recipient would then have to enter a code in Facebook to continue buying the ad. The method will first apply to ads that name candidates ahead of the midterm elections in November, said Facebook spokesman Andy Stone.

The plan was unveiled a day after special counsel Robert Mueller charged 13 Russians with interfering in the presidential election. Mueller’s indictment described how Russian agents stole Social Security numbers and other information from real Americans and used them to create bank and PayPal accounts in order to buy online ads. Agents also recruited Americans to do things such as hold up signs at rallies organized to create content for Russiancreated social media posts.

Facebook did not say how the new postcard method of verification would prevent foreign agents from setting up local mailing addresses and hiring people in the U. S. to check them.