Design principles for accommodat-ing visually impaired individuals

Life Enhancing Technology LabSeoul National University

2013.10.15

Principle 1 ) Use braille• Use tactile imagery• Easily access• Braille written on products

The pins come up from the surface differently by using a different mode set by the machine

Principle 1 ) Use braille• Use tactile imagery• Easily access• Braille written on products

The braille on the surface of the card allows the reader to recognize the numbers

Each braille written on the cube in-forms about the colors for the player to complete the cube

Principle 1 ) Use braille• Use tactile imagery• Easily access• Braille written on products

The braille-wised aircraft lavatory safely leads the user

The machine allows graphic layout by touch

Principle 2 ) Use vibration or alarm

• Warn with vibration or alarm

The cup warns the user by making vibration

The cup warns the user by making alarm sounds

Principle 2 ) Use vibration or alarm

• Warn with vibration or alarm

The device uses remote sensing by recognizing the pressure factors in order to tell the objects and guide the directions to the user.

Principle 3 ) Use light

• Use light to help identify matters

The LED handrails supports people with low vision

Principle 4 ) Vocalize• Use sound (the most common type)• Recognize an object, scan and read written books

When the system recognizes the barcode, the information is converted into sound syn-thesis and is transmitted through Bluetooth head-phones

Principle 4 ) Vocalize

• Warn with vibration or alarm

The digital talking book reads the text aloud to the user

The device reads the written text for the user

Principle 4 ) Vocalize

• Warn with vibration or alarm

The character recognition scanner provides the sound of music as it scans sheet music notes

Principle 5 ) Guide• Prevent potential physical damage• Assist for better usage

The eye drop guide assists the user

The needle guide and vial holder safely assist the user

Principle 6 ) Sense obstacles• Recognize and read obstacles• Being used as a walking aid

The device transfers the sig-nal by Bluetooth for outdoor and indoor navigation

Principle 6 ) Sense obstacles• Recognize and read obstacles• Being used as a walking aid

The device recognizes an obstacle and safely guides the user

Principle 7 ) Fix in position

• Help an object fix in position

The device helps the user to easily fix an object in posi-tion

Principle 8 ) Protect

• Use certain types of protection not to hurt oneself

The device provides safety protections to prevent hurt-ing oneself

Principle 9 ) Predefine

• Alarm when exceeding predefined level

The device alarms the user when the contents inside ex-ceed a particular predefined level