Primary definition
Functional failure that can be remedied by a troubleshooter or election official using only knowledge found in voting equipment user documentation.
Also known asuser-repairable failure · field-serviceable failure · operator-repairable failure · USF
— NIST Election GlossaryView source
Understand more election terms clearly
Get one important election term explained each week, with named public sources, practical context and related definitions.
Free. One useful email each week. Unsubscribe anytime.Learn more about the ESG newsletter →
NIST
Functional failure that can be remedied by a troubleshooter or election official using only knowledge found in voting equipment user documentation.
NIST Election Glossary · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). User Serviceable Failure. In Election Security Glossary. Retrieved September 10, 2026, from https://electionsecurityglossary.com/glossary/user-serviceable-failure
Sources
1 cited · last checked Aug 10, 2026
01
NIST Election Glossary
NIST Election Glossary
Single-source
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.