Mini Research
Talk
Graduate
Larry Shi
Computer Science Department
My Research
 When people ask my research
Basic research is what I am
doing when I don’t know what I
am doing.
My research
 Secure systems
 below OS level
 Identity management
 for mobile devices
 Assistive technologies
 using wearable devices
Hardware and physical security
Yes. We go to defcon.
Layered view of security
System
Firmware
Circuit
Transistors
Physical
Usability and Security
Usability often wins this battle in smartphones
(It is economy!!!)
Smudge Attack
Applied fingerprint powder
Password Doesn’t Solve the Problem
4.7% of users have the password password;
8.5% have the passwords password or 123456;
9.8% have the passwords password, 123456 or
12345678;
14% have a password from the top 10 passwords
40% have a password from the top 100 passwords
79% have a password from the top 500 passwords
91% have a password from the top 1000 passwords
http://xato.net/security/passwords
Smartphone Has Many Sensors
GPS
•
•
•
•
•
Touchscreen
Accelerometer
Microphone
Sensor Based User
Authentication
Cell ID/GPS history.
Touchscreen outputs.
Voices (speaker recognition).
Accelerometer.
Camera.
Touch Based Authentication
Enhance Shape Drawing
Access with User Specific
Touch Features
Touch Gesture Based
Authentication
Virtual Typing Dynamics
Based Authentication
Shape Drawing Login
Manager
Multi-touch Gesture
Engine
Virtual Keyboard
Multi-touch Driver
Touchscreen
Touch Gestures from 30 Users
Context-Aware Touch Screen Based User Identity
Recognition Under Uncontrolled Environment
Data Variation (3 users’ data in Launcher)
1
0.95
0.9
Accuracy
0.85
0.8
0.75
0.7
All Templates
0.65
87% Templates
0.6
69% Templates
0.55
52% Templates
0.5
1
2
3
4
5
6
Sequence Length
Result of 8 Users
7
8
9
10
4/13/2015
Computers over Time
1946
1968
1983
2000
What Can Google Glass Do?
15
Assistive Eyewear
Assisted Living
Computerized Eyewear
Additional Cases with Difficulties to Recognize
Faces
 Dementia.
 Brain injury.
 Memory loss caused by stroke.
 Memory disorder.