2. Lets Define !
“A biometric is a physiological or behavioral
characteristic of a human being that can distinguish
one person from another and that theoretically can be
used for identification or verification of identity.”
11. Disadvantages
• Racial issues
• Dirt , grime and wounds
• Placement of finger
• Too big a database to process
• Can be spoofed –liveness important!
12. Hand Geometry
• Geometry of users hands
• More reliable than fingerprinting
• Balance in performance and usability
14. Retinal Scanning
• Scans retina into database
• User looks straight into retinal reader
• Scan using low intensity light
• Very efficient – cant be spoofed!
15. Disadvantages
• User has to look “directly”
• FTE ratio high in this biometric
• Acceptability concerns
– Light exposure
– Hygiene
16. Iris Scanner
• Scans unique pattern of iris
• Iris is colored and visible from far
• No touch required
• Overcomes retinal scanner issues
• Contact lenses an issue?
17. Face recognition
• User faces camera
• Neutral expression required
• Apt lighting and position
• Algorithms for processing
• Decision
31. General issues
• FTE posses problem
• Biometric characteristics are not encrypted
• Trust on input device
• Cannot authenticate computers!
• Privacy attack?!
32. Current applications
• Banks
• Immigration facilities across USA
• IDwidget – interesting research
• Eyegaze at Stanford
33. Class task
• Sell your biometric product
Case1
A bank needs an appropriate
authentication mechanism to allow remote
user transactions. What kind of multifactor
system would you sell them?
34. Class task…
Case 2:
• Suggest certain areas in which biometrics
would prove disastrous
• Note- You may suggest a particular
combination of biometrics which may be
disastrous to security and privacy