Earlier quoted context omitted.
> tied to the device and not let leak out there are laws against facial recognition ( https://www.msn.com/en-us/news/us/portland-becomes-the-first... ) how is palm recognition different from facial, aside from scanner proximity?
To play devils advocate I guess you could argue that Facial Recognition is passive. Finger print, and by extension palm, requires proactive participation of the user. I.e. you choose to hand over your palm to be read, you do not make the same choice in Facial Recognition scenarios.
What if the technology is built into door handles or other objects that require active use?
As soon as there is an incentive to scan people's palms, technology will be implemented or created to do so. However, Amazon has no incentive to let the public know if there's evidence of multiple people with indistinguishable palms, the rate of false identifications, or other shortcomings of the software.
https://www.technologyreview.com/2011/01/14/197589/fingerpri...