13. Misc topics (1)

Today's topcs

Processing tweets

Takram visualizations

Book visualization

Weather visualization

Visual authenticaton

D3.js

Other visualization systems and libraries

ProcessingTweets

https://gyazo.com/eb819e5ad2d9c7c297491b9738a85cb6

Generative Art

Generate beautiful graphics

https://www.amazon.co.jp/dp/4297104636 https://gyazo.com/ac5851168fed4bb142dc7af1caf620f7

Visualization systems from Takuram

Design company by Kin'ya Tagawa

LEDIX

https://www.youtube.com/watch?v=t_YvT3a_6JU

PLANCK

https://www.youtube.com/watch?v=NNVxQlSxcq4

Book on Scrapbox

Mercari Book

https://gyazo.com/3019123ec3970f13d39b125c1be39777

Distance from Tokyo

https://www.youtube.com/watch?v=WvT8-LKQUJU

Weather visualization

Tokyo Amesh

http://gyazo.com/8ceb314f7e2e40aa232486e3fc9547bf.png

Tokyo wind

http://gyazo.com/7709dd3719f24ec79a2d68b47f9ffb9f.png

Vis.js

GraphVis on the Web

https://gyazo.com/c3354fccbfa059910593f046e4ffc4f3

https://gyazo.com/679742a3d56ec2a7b3ce64e0b0713eb6

Visual authentication

Use visual knowledges for authentication

http://gyazo.com/38a52f9d4f2c67eaf6f6cc7acdf3e13e.png

Why authentication is important these days

Age of ubiquitous computing

Everybody uses computers everywhere

Various computers are shared

Authentication required

Authentication methods

Use what people have

Keys, USB memories

Use what people are like

Bio authentication

Use what people know

Passwords, challenge questions

Use what people can do

CAPTCHA

Web page authentication

Mostly password-based

Visual authentication

Password-based authentication

Easy to implement

No special technology required

Useful on PCs

Keyboards are always available

Safe if properly managed

Problems of passwords

Difficult to select a good password

Difficult to remember

Easy to forget

Easy to attack

Difficult operation

Easy to copy

Character input device required

Problems of authentication hardware

Should be carried all the time

Easily forget to carry

Theft risks

Problems of bio authentication

Vulnerable to injury and sickness

Can be copied

No modification possble

What is the ultimate authentication method?

For everyone

Everywhere

Easy

Safe

No device

Feel safe

Prerequisites

Only use brain power

Knowledges, abilitys

Only proper user can execute

Use episodic memories

Episodic memories

Everyonen has episodic memories

Never forget

Not guessable from others

Impossible to copy

c.f. Semantic memory

Using images for authentication

Episodic memories are often image-related

Using episodic image memories for authentication

DéjàVu

Selecting images for authentication

http://gyazo.com/38a52f9d4f2c67eaf6f6cc7acdf3e13e.png

PassFace

Selecting faces

http://gyazo.com/918210f59d3892b2acdeb7aa276e9863.png

PassPoints

http://gyazo.com/eb52cc445b41c141dae0c2425b962d19.png

Difficult to remember?

People tend to select similar points

VisKey

Select special points

http://gyazo.com/2dbb4edc510938f3f23a0811e6b12ea6.png

Vidoop

Select categories

OpenIDに対応

http://gyazo.com/a5e94fe05d651e09b942566eba50684b.png

Recall-A-Story

http://gyazo.com/80cf70536ce29eb3e8afcde8e93f30f6.png

Select images based on a story

Maybe difficult to remember the story

Easy to forget

Nishigaki's method

http://gyazo.com/fe506a9fca9f94f2553897cd9767c988.png

Select an image from unclear images

Wiedenbeck式

http://gyazo.com/351a3b2722a7f524c2271812f07308c5.png

Select multiple points which surround the image

Quiz-based image authentication

Create quizes from episodic memories

Authenticationi success after right selection

http://gyazo.com/0cc5ab89130f083b358e70cc3edebe36.png

Demo: Quiz-based image authentication

Hondana.org

Creating Q/A pairs

Advantages of quiz-based authentication

Never forget

Easy to handle

Authentication level can be chnged

Used by group of people

Beautiful design possible

Beautiful images

http://gyazo.com/ca70afc60ec5218224c483e7c8ea46c2.png

Prolems of quiz-based authentication

Difficult to prepare images

Users feel unsafe

"Human-crypt" by Prof. Imai

Thinking about authentication from global viewpoint

Important, but not popular

Required technologies

How people can trust the system

Security evaluation

EpisoPass

Create passwords from quizes

No effort for remembering passwords

https://gyazo.com/b115430b2510bf23942be7463578ac9b

Using EpisoPass (EpisoDAS)

https://gyazo.com/117ce9636570a37c9a7553f4db167622

DAS

Use a drawing patter for authentication

https://gyazo.com/dad44e73b739a76973672b1dedd25659

Demo: EpisoPass

Drawing Dynamic Visualizations by Bret Victor

https://vimeo.com/66085662

http://gyazo.com/51e3e96756bf618c25c3184077bae675.png

Video: Bret Victor

Lecture at Stanford

https://www.youtube.com/watch?v=ef2jpjTEB5U

Data-Driven Documents (D3)

JavaScript visualization library

Use SVG and DOM

http://gyazo.com/de8d809e2d27f77f76300a6d854fb322.png

Hidden empty houses in the suburbs

http://www3.nhk.or.jp/news/akiya/ http://gyazo.com/5bed14053463cb734b174c0902dd257d.png

D3 examples

Treemap, Sunburst, etc.

Scrap-Graph

Scrapboxのつながりを視覚化

https://gyazo.com/750fcfca435be7c85e384ea47a7d9723

d3 Treemap

http://gyazo.com/78195b75ea63a1f901f4986d35e40be8.png

d3 Sunburst

http://gyazo.com/8abce282d17e4875f6f389b4cf2abd91.png

c.f. Overdisk

http://gyazo.com/105523c43eea6892fba4a76694f5a5bc.png

D3 now