http://q.hatena.ne.jp/1375780763

https://twitter.com/SeisyoSeisyotan/status/354627325607936000

http://lovecake.tumblr.com/post/57490057216

https://twitter.com/YuhkaUno/status/227763807286599682

https://twitter.com/oki_fujiwara/status/363529854798397440

http://wired.jp/2013/08/06/invisible-bicycle-helmet/

http://blog.livedoor.jp/hisabisaniwarota/archives/52493434.html

http://igi.tumblr.com/post/57430647875

http://internet.watch.impress.co.jp/docs/news/20130806_610561.html

http://kuwataro.tumblr.com/post/57436594877/42-195km

http://www.nintendo.co.jp/3ds/streetpass_relay/index.html

http://www.youtube.com/watch?feature=player_embedded&v=XFKx_lzF6e4

http://nearfuture8.blog45.fc2.com/blog-entry-466.html