continually. >> stahl: it can happen, we don't even know. >> atick: that's the point. >> stahl: joseph atick one of the first scientists to develop facial recognition software. 20 years ago, he was just about to give up on it when... >> atick: i opened up the door to my lab, and what i heard in a metallic voice: "i see joseph." >> stahl: the computer said "i see joseph" because it took your picture. >> attick: it detected my presence in the room, it found my face, and then it recognized that "this was joseph." and so, i started screaming and invited other people in the lab to come in and see, and the computer started alternating from "i see joseph" to "i see paul" to... >> stahl: but atick fears he helped create a monster, and it's headed to the mall. in "minority report," tom cruise is bombarded by ads recognizing him and telling him what to buy. that's still science fiction, but companies are racing to develop digital billboards for shopping malls that, without your being aware of it, scan your face to tell your gender and age. we found this promotional video by intel online showing how th