Constructing Secure Audio CAPTCHAs by Exploiting Differences between Humans and Machines.
Hendrik MeutznerSantosh GuptaDorothea KolossaPublished in: CHI (2015)
Keyphrases
- multimedia
- statistically significant
- human intelligence
- computer programs
- signal processing
- intelligent machines
- cross modal
- authentication scheme
- artificial agents
- user authentication
- visual data
- human behavior
- audio signals
- identity management
- machine vision systems
- digital video
- neural network
- cryptographic protocols
- visual information
- audio video
- audio recordings
- lightweight