Information privacy refers to controlling how personal information is collected and used.
Authentication
Verifying that users are genuine.
Methods
a) Password
Secret characters known only to users.
b) Biometrics
Uses unique body characteristics.
Examples:
- Fingerprint
- Face recognition
- Iris scan
- Voice recognition
c) Two-Factor Authentication (2FA)
Combines two methods.
Example:
Password + SMS code.
Benefit
Provides stronger security.
d) CAPTCHA
Distinguishes humans from automated programs.
Example:
Typing distorted letters shown on screen.
e) Encryption
Converts readable information into coded information.
Only authorized users can decrypt it.
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