Thank you, this was the first comment actually telling more on the matter after all the "it said I'm X years old!" comments :)
I guess using such a system just to analyze people in real-time might already violate some surveillance laws like you said (in my country all such cameras must be warned about, even traffic cameras). But do you have any idea if those things also record data on customers? I could see how keeping such a database on customers might be dancing on the fine line of creating a "registry", which is pretty heavily regulated by laws at least here. Even more so if there is a possibility to identify real persons from that data.
I guess using such a system just to analyze people in real-time might already violate some surveillance laws like you said (in my country all such cameras must be warned about, even traffic cameras). But do you have any idea if those things also record data on customers? I could see how keeping such a database on customers might be dancing on the fine line of creating a "registry", which is pretty heavily regulated by laws at least here. Even more so if there is a possibility to identify real persons from that data.