Nearly 140 West Virginian citizens living abroad in 29 countries cast their ballots via blockchain on Tuesday, the largest pilot test of blockchain voting ever, reports the Washington Post. Yet, security experts still worry the technology contains vulnerabilities that will risk election integrity in the case of broader use.  

IN OTHER NEWS: Microsoft visionair Bill Gates gives keynote at international toilet expo (FAST COMPANY); Lack of tech talent in one city leads Amazon to split HQ2 into two cities (VENTUREBEAT); High-tech farmers are using LED lights in ways that seem to border on science fiction (WASHINGTON POST).