Localized CAPTCHA testing on users and farms.

Ekaterina Gladkikh Kirill Nikolaev Mikhail Nikitin

Published in: WWW (Companion Volume) (2014)

Keyphrases

search engine
end users
usability testing
user interface
user satisfaction
real time
user interaction
email
multimedia
rapid growth
user generated content
user requirements
novice users
user experience
daily life
user interests
user centric
database