Larry ShiComputer Science Department

Graduate Research Mini Talk

My ResearchWhen people ask my research

Basic research is what I am doing when I don’t know what I am doing.

My researchSecure systems

below OS levelIdentity management

for mobile devicesAssistive 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 speedNo "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 123456;9.8% have the passwords password, 123456 or 12345678;14% have a password from the top 10 passwords40% have a password from the top 100 passwords79% have a password from the top 500 passwords91% have a password from the top 1000 passwords

http://xato.net/security/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 GestureEngine

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

04/20/23

Data Variation (3 users’ data in Launcher)

Result of 8 Users

Computers over Time

1946 1968 1983 2000

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.