https://arstechnica.com/tech-policy/2020/09/how-internet-connected-voter-check-in-devices-can-create-election-chaos/

A federal judge in Georgia has ordered election officials to print paper backups of voter data so that voting can proceed even if the digital system for checking in voters fails. This is a win for plaintiffs who have argued that flaws in Georgia's electronic-poll-book (EPB) system hampered voting in the June primary and could do so again in November.

Over the last 20 years, a lot of discussion has revolved around the risk that electronic voting machines pose to the security and integrity of elections. But there has been less attention paid to electronic poll books—another digital system that can undermine election integrity if they malfunction.