Tokyo

It is one of the 47 prefectures of Japan and is the capital of Japan, the center of the Greater Tokyo Area, and the largest metropolitan area in the world. It is the seat of the Japanese government and the Imperial Palace, and the home of the Japanese Imperial Family.

Tokyo is often thought of as a city, but is commonly referred to as a metropolitan prefecture. The prefecture is part of the world's most populous metropolitan area with over 35 million people and the world's largest urban agglomeration economy. Canada has a fewer people than the Tokyo island metropolitan area.

Billboards Read You

In Tokyo, Japan, there are digital advertising billboards being trialled. They are fitted with cameras that read the gender and age group of people looking at them to tailor specific commercial messages.

A consortium of 11 railway companies launched the one-year pilot project in June and has set up 27 of the high-tech advertising displays in subway commuter stations around Tokyo.

The camera can distinguish a person’s sex and approximate age if the person walks in front of the display looks at the screen for a second. If data for different locations is analyzed, companies can provide interactive advertisements "which meet the interest of people who use the station at a certain time," the project said in a statement. Scary when pictures you are looking at look back at you.