Larry Shi Computer Science Department Graduate Research Mini Talk

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 No keyboard Small screen Touch based interface Change password frequently Use password with strong entropy No automatically sign in on boot-up Instant access Interaction speed No "remember me" Avoid same pw for different sites 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 ; 9.8% have the passwords password, or ; 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

Smartphone Has Many Sensors Accelerometer GPS Touchscreen Microphone Cell ID/GPS history. Touchscreen outputs. Voices (speaker recognition). Accelerometer. Camera. Sensor Based User Authentication

Touch Based Authentication Multi-touch Driver Shape Drawing Login Manager Multi-touch Gesture Engine Virtual Keyboard Enhance Shape Drawing Access with User Specific Touch Features Touch Gesture Based Authentication Virtual Typing Dynamics Based Authentication Touchscreen

Touch Gestures from 30 Users

Context-Aware Touch Screen Based User Identity Recognition Under Uncontrolled Environment 10/21/2015 Data Variation (3 users’ data in Launcher) Result of 8 Users

Computers over Time

What Can Google Glass Do? 15

Assistive Eyewear Computerized Eyewear Assisted Living

Additional Cases with Difficulties to Recognize Faces Dementia. Brain injury. Memory loss caused by stroke. Memory disorder.