On the viability of CAPTCHAs for use in telephony systems: a usability field study.

Niharika Sachdeva Nitesh Saxena Ponnurangam Kumaraguru

Published in: APCHI (2013)

Keyphrases

technological advances
computer vision
machine learning
genetic algorithm
artificial neural networks
empirical studies
retrieval systems
database
information systems
future development
usability studies