Retailers and others are gathering your biometric information for a multitude of uses. I would imagine selling your information is one of the uses.

I'm not sure how I feel about this and what I might do to prevent it should I decide not to allow them my information. Do I really care? If so, why do I care? Reflective sunglasses, gloves and masks should work, but not on voice recognition.......

As shoppers get groceries at the Fairway supermarket on Broadway and West 74th Street, there are signs around pointing out navel oranges and blueberries are on sale. There is also a sign alerting the very same shoppers that the supermarket is collecting, retaining, storing and sharing information that identifies them, like eye scans and voiceprints.

Most who were in the Upper West Side store on Wednesday were not aware the sign was even there, and were blissfully unaware of what the store had been doing.

Fairway's parent company, Wakefern, said that biometric identifier information (BII) is "helping our store reduce retail crime. Only trained asset protection associates use the system, which helps us focus attention on repeat shoplifters."
Lots More Here