Every jurisdiction I'm aware of in the USA does ballot reconciliation, to detect double voting. Some are using electronic poll books, updated in near real time, to help prevent it.
"Ballot reconciliation", executed perfectly, can only detect multiple ballots by the same registration.
I'm talking about an individual registered multiple times in separate precincts simultaneously.
Every jurisdiction I'm aware of in the USA does ballot reconciliation, to detect double voting. Some are using electronic poll books, updated in near real time, to help prevent it.