And if you have a smartphone with INFRARED IMAGING... You could leverage that LIVE DATA to tell you the woman's TRUE EMOTIONS as she speaks of thinks. You could leverage all this to detect mental disorders, phobias, behavioral issues, and so on.

If you had NEAR FIELD INFRARED or HYPERSPECTRAL or MULTISPECTRAL imaging on your smartphone, you could tell if her jewelry was fake or real, signs of skin cancer on her exposed skin, what perfume she's wearing, what shampoo she uses, but that's not common on smartphones for the moment.

Why fear BIG DATA? When it could be leveraged strongly for your immediate benefits.