Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Punchscan

Punchscan is an optical scan vote counting system invented by cryptographer David Chaum. Punchscan is designed to offer integrity, privacy, and transparency. The system is voter-verifiable, provides an end-to-end (E2E) audit mechanism, and issues a ballot receipt to each voter. The system won grand prize at the 2007 University Voting Systems Competition.

Voting procedure, Tabulation procedure & Overview

Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.

Research this topic

Explore the main themes, entities and connections around Punchscan. Start with the topic map, then use the sections below for research and deeper semantic analysis.

Explore this topic

Start with a few of the strongest sections from the source topic. These are research directions, not a list of keywords you must use.

Voting procedure

BallotCandidatesSymbolLetterBingo
10 related topics

Tabulation procedure

CokePepsiDatabaseShuffledCryptographic key
9 related topics

Overview

Optical scanVote counting systemCryptographerDavid ChaumBallot receipt
17 related topics

Basic auditing procedures

True randomDiceStock market
3 related topics

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

Available in
English
Developers
Richard Carback, David Chaum, Jeremy Clark, Aleks Essex, and Stefan Popoveniuc.
License
Revised BSD license
Operating system
Cross-platform
Preview release
1.5 (July 16, 2007) [±]
Stable release
1.0 (November 2, 2006) [±]

Topics to explore

Browse the full topic structure. Each item opens a new analysis centered on that subject.

Overview

Voting procedure

Tabulation procedure

Basic auditing procedures

Additional security

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

Map overview Semantic statistics

Punchscan

Nodes48
Edges47
Triples29
Avg. degree1.96
Density0.041667
Components1

How this topic connects Entity context

See the strongest relationship patterns around the current topic before diving into the raw triples.

Punchscan

Top relations

related to External links · 11
Punchscan → BBC World's Digital Planet, David Chaum, Democracy, IEEE Spectrum, Making Every E-vote Count, Open Voting, Part, Part IIFuture Tense, Project, Submission, Transparent
related to Voting procedure · 7
Punchscan → Below, Bingo-style, Inside, On, The, This, To
Available in · 1
Punchscan → English
Developers · 1
Punchscan → Richard Carback, David Chaum, Jeremy Clark, Aleks Essex, and Stefan Popoveniuc.
License · 1
Punchscan → Revised BSD license
Operating system · 1
Punchscan → Cross-platform
Preview release · 1
Punchscan → 1.5 (July 16, 2007) [±]
Stable release · 1
Punchscan → 1.0 (November 2, 2006) [±]
Type · 1
Punchscan → vote counting system
Website · 1
Punchscan → http://punchscan.org/

Important terminology Word statistics

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

ballot database election displaystyle ballots order receipt voter candidate system information layer result authority david chaum databases voting vote beside

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
PunchscanAvailable inEnglish1.00infobox
PunchscanDevelopersRichard Carback, David Chaum, Jeremy Clark, Aleks Essex, and Stefan Popoveniuc.1.00infobox
PunchscanLicenseRevised BSD license1.00infobox
PunchscanOperating systemCross-platform1.00infobox
PunchscanPreview release1.5 (July 16, 2007) [±]1.00infobox
PunchscanStable release1.0 (November 2, 2006) [±]1.00infobox
PunchscanTypevote counting system1.00infobox
PunchscanWebsitehttp://punchscan.org/1.00infobox
PunchscanWritten inJava1.00infobox
Punchscanis aoptical scan vote counting system invented by cryptographer David Chaum0.90text
Punchscanrelated to Additional securityTo0.60section
Punchscanrelated to External linksProject0.60section

Related concept clusters Concept neighborhoods

These clusters group vocabulary that occurs around closely connected concepts in the source material.

    Connections between topic areas Semantic bridges

    Bridges can reveal useful research angles that are easy to miss in a flat list of related terms.

    Min side: 3
    For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.