“The problem is that you might’t change biometrics once it’s been compromised.”
The promotion is to help Amazon use the data to improve its technology.
Experts say this is where the tech can get tricky.

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“That information is now out there and is potentially insecure,” Haber said.
But Haber said its difficult to put a price tag on that data.
In January, a court ruled thatFacebook had to pay out a $650 million settlement to Illinois users.

Amazon One
The settlement means each person who claimed it would get about $350a lot better than $10.
But he said that the key will be prioritizing how that data is stored.
“I look at having a full palm as single-factor,” he said.
Haber said theres a place for using biometric data in the future, but we must tread lightly.