Still, the announcement by ES&S is the latest sign that states are getting the message about the problems with paperless voting systems.
Initially, few people paid attention to computer security experts who warned that these systems were vulnerable to hacking.
More recently, states have begun to heed those warnings, and a number of states have shifted to voter-marked, optical-scan paper ballots.
Amid growing warnings about the security of American voting systems, many states are rushing to address vulnerabilities exposed by the 2016 election, even as intelligence officials worry they are fighting the last battle and are not sufficiently focused on a new generation of threats headed into 2020.
Delaware has replaced its voting machines to assure paper backup that would provide a record in case of a breach.