In Japan, they test billboards that know your gender and age.

Perhaps you have already heard about the Japanese developments in the field of outdoor advertising, in particular about billboards that a man in front of him or a woman can recognize and display personalized ads. Now these shields and image scanning systems will appear at Tokyo subway stations.

A consortium of 11 railway companies launched a pilot project that will last for a year, within which 27 experimental advertising billboards will be installed. You could see similar shields in the fantastic movie Minority Report with Tom Cruise. Advertising media from the film could recognize people by name and shout out personal advertising offers, real development was less able. Experimental shields use cameras and software specifically for recognition and so far can only determine the sex and age of passersby.

“The camera can distinguish the sex of a person and determine the approximate age if a person passes in front of the display and looks at it for at least a second,” reports Franz-Press.
The goal of the project, at least for the time being, is to collect data on which people are looking at which advertisement at what time of day. As soon as they manage to get this data, marketers will be able to use it to plan the strategies of their advertising campaigns. And it seems that the display of advertising can be configured in such a way as to show one or another video depending on who is passing by. Of course, fairly generalized: nail polish and love stories for girls, big HD TVs and black leather chairs for guys, red sports cars for middle-aged people, etc.

Officials representing the project promise that the images recorded by the cameras will not be saved, although this is unlikely to reassure those concerned about the importance of privacy. All of these big screens and interactive billboards are already more than gigantic advertising posters. And I want to believe that they will never be able to read our thoughts, because it is unlikely that anyone would want to go along with a billboard that shows something specifically for us, but we would hardly want to admit to what it is publicly.
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According to CNET