Keyphrases
- spam filtering
- biometric authentication
- user authentication
- authentication scheme
- instant messaging
- identity authentication
- electronic mail
- communication medium
- authentication protocol
- spam e mail
- identity management
- image authentication
- spam detection
- digital watermarking
- low cost
- text mining
- key distribution
- biometric data
- anti spam
- data mining
- multimodal biometrics
- neural network
- real time
- authentication mechanism
- factor authentication
- fragile watermarking
- database