http://pc.watch.impress.co.jp/docs/topic/feature/1075458.html

http://gigazine.net/news/20170811-44-trillion-camera-watching-us/

http://karapaia.com/archives/52243766.html

http://www.gizmodo.jp/2017/08/air-twins.html

http://watchmono.com/blog-entry-7767.html

https://twitter.com/RPM99/status/65760801847377920

https://twitter.com/naka_chiko/status/783198484505604096