A look at Alfi, which plans to use facial detection to target ads in public places based on age, gender, and ethnicity; activists say the tech invites abuse (Brody Ford/Bloomberg)

Brody Ford / Bloomberg:
A look at Alfi, which plans to use facial detection to target ads in public places based on age, gender, and ethnicity; activists say the tech invites abuse  —  The artificial intelligence software company uses metrics like age and gender to target highly specific ads to people in public places