captchas
Human verification puzzles
Captchas is the plural of captcha, a test designed to distinguish human users from automated programs on websites.
The test typically asks users to identify distorted text, select images matching a description, or complete simple puzzles: I had to click all the traffic lights in the captcha before I could log in.
The word is an acronym for "Completely Automated Public Turing test to tell Computers and Humans Apart."
Evaluative examination
- puzzleChallenge testing ingenuity
- distortionTwisting from original state
- verificationProving something accurate
- gatekeepingControlling access to something
barrier · obstacle · frustration · inconvenience · difficulty · proof · humanity · screening
Framework of intersecting lines
- checkboxToggleable selection indicator
- clickBrief sharp noise
- streetlightsRoadside night illumination
- crosswalksMarked street-crossing zones
bicycles · traffic-lights · storefronts · hydrants · buses · stairs · motorcycles
Authentication act or screen
- formsVarieties or documents
- submissionsItems offered for consideration
- sign-upAct of registering
- accessRight to enter
registration · gateway · entry · checkout · downloads · surveys · voting
Automated software agents
- spamUnsolicited bulk messages
- malwareHarmful computer programs
- phishingFraudulent credential harvesting
- hackersUnauthorized computer system intruders
cybersecurity · protection · defense · threats · breach · intrusion · scraping · brute-force
Programs voicing on-screen text
- alternativesOther available options
- frustrationDispleasure from blocked efforts
- exclusionBeing barred from participation
- disabilityImpairment affecting life activities
compliance · usability · refresh · skip · difficulty · time-limits
test
Evaluative examination
- puzzleChallenge testing ingenuity
- distortionTwisting from original state
- verificationProving something accurate
gatekeeping · barrier · obstacle · frustration · inconvenience · difficulty · proof · humanity · screening · filtering
grid
Framework of intersecting lines
- checkboxToggleable selection indicator
- clickBrief sharp noise
- streetlightsRoadside night illumination
crosswalks · bicycles · traffic-lights · storefronts · hydrants · buses · stairs · motorcycles
login
Authentication act or screen
- formsVarieties or documents
- submissionsItems offered for consideration
- sign-upAct of registering
access · registration · gateway · entry · checkout · downloads · surveys · voting
bots
Automated software agents
- spamUnsolicited bulk messages
- malwareHarmful computer programs
- phishingFraudulent credential harvesting
hackers · cybersecurity · protection · defense · threats · breach · intrusion · scraping · brute-force · DDoS
screen-readers
Programs voicing on-screen text
- alternativesOther available options
- frustrationDispleasure from blocked efforts
- exclusionBeing barred from participation
disability · compliance · usability · refresh · skip · difficulty · time-limits
- digital servicese-signatures, e-billing, e-statements, e-government, e-governance
- digital annoyancesspam, pop-ups, ads, malware, viruses
- internetinternet, websites, web, browsers, web browsers
- securitysecurity guard, security cameras, alarm system, security system, lock
- consumer hassleshidden fees, long lines, out of stock, late delivery, overcharging
captchasopen access
Free public scholarly content
single sign-on · SSO · auto-fill · guest access · biometric login
captchasdigital certificates
Cryptographic identity verification files