Primary definition
precinct count optical scanner
Also known asprecinct count optical scan · optical scan voting system · optical scan voting machine · optical scan ballot counter
2 sources cited4 related termsReviewed Aug 9, 2026
— CIS/EI-ISAC Essential Guide to Election SecurityView source
Understand more election terms clearly
Get one important election term explained each week, with authoritative sources, practical context and related definitions.
Free. One useful email each week. Unsubscribe anytime.Learn more about the ESG newsletter →
CIS
High consensus
precinct count optical scanner
CIS/EI-ISAC Essential Guide to Election Security · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Pcos. In Election Security Glossary. Retrieved August 13, 2026, from https://electionsecurityglossary.com/glossary/pcos
Sources
2 cited · last checked Aug 9, 2026
01
CIS/EI-ISAC Essential Guide to Election Security
Essential Guide to Election Security
High consensus
02
Electronic Voting Glossary
Electronic Voting Glossary
High consensus
Get the weekly election term
Receive one cited, source-backed election explanation in your inbox each week.
Get election terms explained weekly →
Free · Nonpartisan · Unsubscribe anytime.