Authentication to access a computer system requires at least one of three factors: something you know like a password or PIN; something you possess like an ATM, smart, or security token; or something you are through biometric identification using fingerprints, iris scans, facial recognition, or hand geometry. Common methods include entering a password or PIN, using a smart card or security token, and providing biometric data to a fingerprint, iris, or facial recognition reader. A security token dynamically generates and displays changing passwords as an additional authentication method.

1. AUTHENTICATION ACCESS CONTROL TO COMPUTER SYSTEM USER ID something you know POSSESSED OBJECT BIOMETRIC DEVICE something you are something you have 1 2 3

2. Pin number ********* Password ********* USER ID something you know 1

3. 2 POSSESSED OBJECT something you have Smart Card ATM Card Credit Card Security Token 342601

4. BIOMETRIC DEVICE something you are 3

5. AUTHENTICATION Pin number Password Something you know Something you have 342601

6. Static Password Dynamic Password 342601 Something you have Something you know SECURITY TOKEN A security token is a small handheld device that dynamically generates and displays a password . 342601

7. IRIS SCANNER

10. HAND GEOMETRY READER

11. FACIAL RECOGNITION

12. FINGER PRINT READER

14. FINGER PRINT READER

15. HAND GEOMETRY READER