@danielmcclure on Twitter: "Photo: Facial Recognition Billboard Only Lets Women See the Full Ad http://tmblr.co/ZfiJexGql2ve"

Last Updated: February 22, 2012

Photo: Facial Recognition Billboard Only Lets Women See the Full Ad http://tmblr.co/ZfiJexGql2ve

Source

https://twitter.com/danielmcclure/status/172261968244244480